Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0ed60316d8f5c5…

MALICIOUS

PDF

75.2 KB Created: 2021-05-22 19:37:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ac5b85e54fe481af6dcd6806d905fed SHA-1: d45bfa0eea7e962227bc794f6348a559b736ef60 SHA-256: 7e0ed60316d8f5c584ebd91e16369456bb409f5a16b8e206c3aa48f0112cc919
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. The presence of numerous external links, many pointing to PDF files, suggests a link farm or SEO poisoning attempt. The document body, though heavily corrupted, contains references to 'California dmv statement of facts form reg 256', indicating a lure to trick users into clicking malicious links, likely for phishing or advance-fee scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://vilenefex.ru/strik?utm_term=california+dmv+statement+of+facts+form+reg+256
    • https://zubetotuduve.weebly.com/uploads/1/3/5/3/135340520/4908360.pdf
    • https://pafufido.weebly.com/uploads/1/3/1/4/131407890/zipizoxeso.pdf
    • https://cdn-cms.f-static.net/uploads/4489028/normal_5fea44f787f66.pdf
    • https://falojabuvo.weebly.com/uploads/1/3/4/7/134774067/xuboxilusula.pdf
    • https://terumadepomajok.weebly.com/uploads/1/3/4/3/134367642/tikawegosakexix.pdf
    • https://vofepelatuj.weebly.com/uploads/1/3/4/7/134768647/ledewapupujed.pdf
    • https://nuzukozifazo.weebly.com/uploads/1/3/2/6/132682871/pefoxamukuberug_boxobafogekub_tuvogewup_purigise.pdf
    • https://dezijetide.weebly.com/uploads/1/3/4/8/134864221/gifunubad.pdf
    • https://xonugovelixef.weebly.com/uploads/1/3/0/7/130739086/folamufutalure-zakesutexafewal-vojudalopugoko.pdf
    • https://noxurawikatiner.weebly.com/uploads/1/3/1/1/131163986/5d76bb3.pdf
    • https://wujatukeki.weebly.com/uploads/1/3/1/8/131856991/b7fc22230.pdf
    • https://static.s123-cdn-static.com/uploads/4448343/normal_5fdcbc7161f6b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pipaneku/burke_and_hare_movie.pdf
    • https://s3.amazonaws.com/taguxif/mekudotofipogile.pdf
    • https://s3.amazonaws.com/sojuravewi/sujoxogamaxerunum.pdf
    • https://s3.amazonaws.com/kefefetafij/solujuganuzafalekevovu.pdf
    • https://s3.amazonaws.com/waduzirader/ziwatewidalurotunepaze.pdf
    • https://s3.amazonaws.com/votubukaxogilix/pre_diabetes_guidelines_uk.pdf
    • https://s3.amazonaws.com/faduxodiwo/96630396412.pdf
    • 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_off0000e64f.bin
7b0f2e08d1490285180fdf09727aa3d1dabc70070ee1e9b8b2eb3616bc6a6fc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE64F 5716 bytes
font_01_sfnt_off0000f9bc.bin
af77c5a15a447daad4e1a50c784e5810266105ae38296d2f81d35e7e283a036c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9BC 10892 bytes

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