PDF malware analysis — malicious · 80223546e6384395

MALICIOUS

PDF

97.2 KB Created: 2021-07-13 23:18:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05

MD5: 7bc06379c864c6eb5f1180b3552aab31 SHA-1: 547aa6cf7e891c52ac3debd5d98916982724cb23 SHA-256: 80223546e6384395e3b730295091e100f24d349c6259b07891d9104eb9ccc19f

216 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links, many pointing to compromised WordPress uploads and disposable hosting, suggesting a link farm designed to obscure the true destination. One prominent link impersonates Netflix, directing users to a URL that is likely part of a credential phishing or malware distribution scheme.

Machine Learning

Nyx PDF Classifier malicious score 0.9902

Heuristics 8

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://laborke.ru/uplcv?utm_term=first+time+jesus+is+mentioned+in+the+bible.
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://laborke.ru/uplcv?utm_term=first+time+jesus+is+mentioned+in+the+bible PDF link annotation
- http://driver-jazda.pl/upload/file/37818736243.pdfIn PDF document text
- https://cargotavio.ru/files/file/tugiwi.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5c20cb10bb---52502241226.pdfIn PDF document text
- http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ab93932916---vawagim.pdfIn PDF document text
- https://beysukonaklari.com/ckfinder/userfiles/files/gadivalegirodusaneke.pdfIn PDF document text
- https://samarthanamparisara.org/apadmin/uploads/userfiles/files/nonedipij.pdfIn PDF document text
- https://perfecthospitals.org/FCKeditor/file/xewejusifiromepebonag.pdfIn PDF document text
- https://jgmurphy.com/wp-content/plugins/super-forms/uploads/php/files/bbb23a056cc2f985fcf789141206d7ff/96669168314.pdfIn PDF document text
- https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/3qi898f3gdn38g3hb66r8clg46/fipit.pdfIn PDF document text
- http://dorinhawear.com/admin/fckeditor/editor/filemanager/connectors/php/fckeditor/editor/filemanager/connectors/php/userfiles/file/nululifewusap.pdfIn PDF document text
- http://meble-tk.pl/userfiles/file/betawezavosuwetuvisubojir.pdfIn PDF document text
- https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607675d42c783---vemivuvarazojitora.pdfIn PDF document text
- http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607675501820b---29493561479.pdfIn PDF document text
- http://cestovni-postylka.eu/userfiles/file/41673369574.pdfIn PDF document text
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/a4f5a2f43cad628b4a8122c8f0da0dba/79459495659.pdfIn PDF document text
- http://kiemtoanhaiphong.vn/upload/files/87209414656.pdfIn PDF document text
- https://cedria.es/DOCUMENTS/FotosFCKEditor/file/rajelimiji.pdfIn PDF document text
- https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/iotl8glb79k9h7gicpevhh00l5/nobuzukuvafokeguwuka.pdfIn PDF document text
- http://camwater.org/media/files/laxolegajarijipo.pdfIn PDF document text
- https://carparts-fixture.com/file/file/14873263066.pdfIn PDF document text
- https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/hbed5aap15ln9fkge3bnfpbot6/39041021540.pdfIn PDF document text
- http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c43b50d1b4a---bosox.pdfIn PDF document text
- http://anbao.vn/uploads/userfiles/file/faxajufepukafofilewalo.pdfIn PDF document text
- https://moscowfashion.net/content/xuploadimages/file/rurineme.pdfIn PDF document text
- http://partnerplus30.ru/images/fornews/files/lejudisegewokoneziva.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000100bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100BF	18528 bytes
SHA-256: `050159d1f66ce9bf599fd7fb7dc5afb6e30a51aec085304d8e955b1ce3356ab8`
`font_01_sfnt_off00013141.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13141	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00014952.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14952	16104 bytes
SHA-256: `11069f86f5c397118b26eb36ee95a936a6f2648119653cccbcc349a503103c56`
`font_03_sfnt_off00015ea4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15EA4	10696 bytes
SHA-256: `7dff0200a8fe90d5c94729e6705c28154bc6d365396c068a6419cfadf21e51a5`

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