Malicious PDF — malware analysis report

Static analysis result for SHA-256 e37217c694c5a68c…

MALICIOUS

PDF

77.3 KB Created: 2021-03-21 11:38:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e692e788d6e786e4b3108fb611f6e3f9 SHA-1: bed51de361eb4f3c19509a34b5c5912b11a7f6a8 SHA-256: e37217c694c5a68cd72838d521e38b43f09021b2922859d77700923ef166cb71
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains heuristics indicating it's a phishing lure, specifically mentioning a callback scenario related to financial matters. It also includes a large number of external links, suggesting a link farm or SEO manipulation tactic. The embedded URL points to a domain associated with potentially malicious content, and ClamAV detection further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pelibifir.ru/wix?keyword=can+i+get+a+cash+advance+on+my+direct+express+card
    • https://makojinoguj.weebly.com/uploads/1/3/1/4/131406607/xufisojuxenaname.pdf
    • https://sawuzirerepobod.weebly.com/uploads/1/3/4/0/134040369/duvadibasure.pdf
    • http://pinixubezanamot.iblogger.org/maze_runner_1_full_movie_download_in_hindi_filmyzilla.pdf
    • https://vepenisa.weebly.com/uploads/1/3/4/3/134339982/fejobugivufidoxod.pdf
    • https://nulodikoz.weebly.com/uploads/1/3/2/7/132740439/wuzakokurinipamiviv.pdf
    • https://lufisadoxusixa.weebly.com/uploads/1/3/4/5/134583632/tijolivobafojex-xufebozope.pdf
    • https://sazisibibufesu.weebly.com/uploads/1/3/4/3/134339611/4484737.pdf
    • https://wedebiki.weebly.com/uploads/1/3/0/9/130969436/0880c.pdf
    • https://gejiraje.weebly.com/uploads/1/3/2/7/132740564/pelivejitadasan.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pizivurapab/regavogamimisujedinije.pdf
    • https://s3.amazonaws.com/dupula/33002025825.pdf
    • http://jiwepatifon.rf.gd/zevakofotagifeligaji.pdf
    • https://s3.amazonaws.com/wizuluworafid/chieta_bursary_application_form_2018.pdf
    • https://s3.amazonaws.com/gawabog/40506947167.pdf
    • http://xubobesirubujo.rf.gd/stephen_king_salems_lot_wikipedia.pdf
    • https://f6b99bba-f064-431f-ab68-6eacb91b2703.filesusr.com/ugd/35e1ce_48baa8e25fec4461a21370f97edd05cb.pdf?index=true
    • https://s3.amazonaws.com/tizowodifi/b_smithi_tarantula_care_sheet.pdf
    • https://4253c66a-660d-4c83-b31d-f715833d547b.filesusr.com/ugd/d9e9a0_bf0f02040ff04a8188925ed0236429f1.pdf?index=true
    • http://bawavejukedosuv.epizy.com/sulilomal.pdf
    • http://kiroxivox.epizy.com/arq_movie_mp4.pdf
    • http://vogonadebemumox.epizy.com/ragesasemo.pdf
    • http://pesaforasipu.epizy.com/anodised_aluminium_sheet_suppliers.pdf
    • https://891dfe3a-8969-4df2-b253-5ccc4ebbb7a0.filesusr.com/ugd/e66789_ae90831b5f0f44baa9dad94f31306a05.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef0b.bin
f5cae9c40e464c58e80ed9566aa5978cc5d356f6d1851d9f259a004fe8686fac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0B 5588 bytes
font_01_sfnt_off000101ef.bin
f8af2c448cb9a14ca708b16baab8a6a2d173b99cfdf9b05149ead4bbb4ddc7ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101EF 10936 bytes

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