PDF malware analysis — malicious · 60f8380ba864ec85

MALICIOUS

PDF

85.9 KB Created: 2021-07-09 07:26:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25

MD5: 784f5fcf11bd2300f3e5030ac1fae8e1 SHA-1: 2f70b0e27d42a0cbac289d24b3c5f5c3fb5bf096 SHA-256: 60f8380ba864ec85933a2e4f51b696f54de5454e829dd26bc9c2a8a40552ae6b

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document functions as a link farm, directing users to numerous websites hosted on potentially compromised or disposable domains. The primary attack pattern involves luring users to these external sites, which likely host phishing content or further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9942

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
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://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/86010967e8806de8bbf21f10a61c603d/nozewi.pdf In PDF document text
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071b31b41686---65362867782.pdfIn PDF document text
- http://chikatere.com/Upload/files/52176727877.pdfIn PDF document text
- http://cmtdental.com/upload/ckimg/files/2819629450.pdfIn PDF document text
- https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/22781dc130b65a032d71ea265b8273cd/kuvomulamegopemugeradux.pdfIn PDF document text
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a850aa3320d---89590959751.pdfIn PDF document text
- https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/160828b9322b15---rovamimukovuvifon.pdfIn PDF document text
- http://www.toptehnik.si/images/3826422009.pdfIn PDF document text
- http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160add23c57602---47797145867.pdfIn PDF document text
- https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4d8158150---9166373191.pdfIn PDF document text
- http://jump360.co/upload/files/20210602033058.pdfIn PDF document text
- http://aeronautike.com/userfiles/file/didar.pdfIn PDF document text
- http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608583f993134---63397009760.pdfIn PDF document text
- https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f1e3d00f1e---zofetudomizufubezerib.pdfIn PDF document text
- http://asea-admin.com/_userfiles/file/20210519065122.pdfIn PDF document text
- http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160923c7826cba---66195123505.pdfIn PDF document text
- http://sy-smile.com/upload/files/tazojesu.pdfIn PDF document text
- https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b133f44f65c---timurapujopizuwute.pdfIn PDF document text
- https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a27a0ebe0bb---dikoxenefozulosa.pdfIn PDF document text
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16070ec3185302---dapatubu.pdfIn PDF document text
- https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16082bf024d55d---doxeraxujabamewufamuz.pdfIn PDF document text
- http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ade718b4a6---wepotogadokidew.pdfIn PDF document text
- https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/53617f7905ae5404689b2c1df48edabc/zasag.pdfIn PDF document text
- https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/e4ce52cff5316c5290b85e95c9812de3/baxekubexovaja.pdfIn PDF document text
- https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/u41tl22rqi1dfe9qmjihulv0t3/nezulasafulepumidebo.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=natal+chart+symbols+and+meaningsPDF link annotation
- 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000eb33.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEB33	17388 bytes
SHA-256: `c560b21311be733802f938751061e1049f04fdb0bfe769b78e843757d31d188a`
`font_01_sfnt_off000118ed.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x118ED	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00013104.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13104	11048 bytes
SHA-256: `15e8aee20f0f2eae8bb029266095bbce36c4a7387c08b7a41659ea499ac3566a`

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