Malicious PDF — malware analysis report

Static analysis result for SHA-256 3794af36cff195b5…

MALICIOUS

PDF

68.1 KB Created: 2020-12-23 13:30:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4354e0a531de2382a2a03a3694c18ed2 SHA-1: 640f370c701aabe3b8181a9492972a0e90b75553 SHA-256: 3794af36cff195b5ad85a660f7e96e27b3d5ea9a455303092649d8e646c287f6
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection scheme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://trafficel.ru/strik?utm_term=punjabi+songs+lyrics+video+download+for+whatsapp+status PDF link annotation
    • https://wojemedirok.weebly.com/uploads/1/3/4/7/134724763/jimupaw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379859/normal_5fccf78b0025d.pdfIn PDF document text
    • https://goxuxogegeta.weebly.com/uploads/1/3/4/6/134688707/widil.pdfIn PDF document text
    • https://tunejipurebodo.weebly.com/uploads/1/3/4/3/134342488/japek_kupabom.pdfIn PDF document text
    • https://galinigogazefu.weebly.com/uploads/1/3/2/6/132695851/7476655.pdfIn PDF document text
    • https://vevotudoxis.weebly.com/uploads/1/3/5/3/135313682/mogozodelamafuw.pdfIn PDF document text
    • https://zabapekiji.weebly.com/uploads/1/3/4/4/134470890/kosufofuwojisovi.pdfIn PDF document text
    • https://xizovetezewo.weebly.com/uploads/1/3/2/8/132814166/xunitesisor_kugunu_sopije_gonikawugo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/lulis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c6dd113-427c-49fb-b120-d4187fa7119d/80813658063.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/algebraic_properties_of_equality.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/fararapi.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/bejeweled_twist_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/kozonu.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/annual_report_of_coca_cola_company_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/briggs_stratton_vanguard_engine_repair_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/74685340270.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD14 5888 bytes
SHA-256: d941c0f6ea3a58b997a936963e70342e403d128594f694f69de392aabe540bbd
font_01_sfnt_off0000e134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 9944 bytes
SHA-256: ddbbdeb47c39123ec6bf462bf12f67374f0e90ef1069d7ded376b97f853661d9

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