PDF malware analysis — malicious · 2337fecf836896f0

MALICIOUS

PDF

84.0 KB Created: 2021-09-05 00:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16

MD5: 25ce86f1dbb0d69555f23c6d18594c94 SHA-1: 05c3ab849d97a1765fbcc186685015ee4f7bb9b8 SHA-256: 2337fecf836896f0842591b83e3f7f67bec7fc121e9e4800162d1d24c308fa4d

224 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link T1059.007 JavaScript

This PDF document is flagged as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous links to compromised or disposable hosting, with specific heuristics indicating a 'Payment redirection / bank-detail change lure' and a 'Callback phishing phone lure'. The presence of multiple embedded URLs, some pointing to potentially malicious content, suggests an attempt to redirect users to malicious sites or download further payloads. No scripts were extracted, but the overall pattern strongly indicates a financial scam.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

Heuristics 9

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE

Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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 http://eugensa.lt/app/webroot/uploads/userfiles/files/wiworibefebirakeporakiv.pdf In PDF document text
- https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/3cotcrihbubsv461l4th2g27ah/1007844074.pdfIn PDF document text
- https://portalbime.com/UploadedFiles/New/file/letejanawabefizuweb.pdfIn PDF document text
- http://silver.jo/ckfinder/blanc/files/10345449516.pdfIn PDF document text
- https://werbemittelag.chupload/file/bezebafedaxagatiwojereso.pdfIn PDF document text
- https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/0bf28e0fd0a19dc618a1d05e1c3ee1dc/muzoxeketemizawabonize.pdfIn PDF document text
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe38976c7d---52838245637.pdfIn PDF document text
- https://bataretak.com/img/files/file/22526158680.pdfIn PDF document text
- http://trustarshida.co/cache/fck_files/file/79049944954.pdfIn PDF document text
- https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/8855psin7obdubsa0cp63cbpb7/18274841133.pdfIn PDF document text
- http://leoclubmarsala.it/userfiles/files/68125233286.pdfIn PDF document text
- http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ae0a5d0ab---64926477754.pdfIn PDF document text
- http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1611312b5bb1bc---88683687242.pdfIn PDF document text
- http://bhk-aindling.de/userfiles/files/nagukonadifun.pdfIn PDF document text
- https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/bdrpddk6o2i92gr1gre7aitqpb/videzenarutuku.pdfIn PDF document text
- http://cappellastudio.it/userfiles/files/40144796665.pdfIn PDF document text
- https://binarbaidequipment.com/public_html/userfiles/file/vajudidegizusu.pdfIn PDF document text
- http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079772a9acd7---danewowapifidofuko.pdfIn PDF document text
- http://daotaonhaccong.com/uploads/userfiles/file/korazagejolada.pdfIn PDF document text
- http://kingnature.ru/files/files/3434959107.pdfIn PDF document text
- http://pdww.ru/ckfinder/userfiles/files/guzamolidamuwonomi.pdfIn PDF document text
- https://cornerstonelaw.eu/userfiles//file/xifemujugebozofejeto.pdfIn PDF document text
- http://mulherinscampground.com/clients/879992/File/mukibejolonogojonoto.pdfIn PDF document text
- https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/kla9bc2191l45nvvluspujn15d/76817602948.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=canara+bank+statement+pdf+file+downloadPDF link annotation
- http://alessandrotria.altervista.org/areap/ckfinder/userfiles/files/gopifozutapogalepanulef.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e0d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0D1	18476 bytes
SHA-256: `cb6ef336c1bdf25a2888d03868650c7254dbd1cdab4c26ab99e8238b98361b37`
`font_01_sfnt_off00011095.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11095	11008 bytes
SHA-256: `b5f381ecb552e144a4fd4a9eaa70deeb97dd6430f123a8373ac6d824289d0931`
`font_02_sfnt_off00012a08.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12A08	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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