Malicious PDF — malware analysis report

Static analysis result for SHA-256 069241cd49605ece…

MALICIOUS

PDF

71.0 KB Created: 2021-02-04 15:12:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 26a2231c3a07334f074fb657380315f9 SHA-1: 05d3e126139b1466e6570c37208012bc4b91842f SHA-256: 069241cd49605eceb3daeaf5d0ab2db6096f57b7815f80ceef11116755ac79ae
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains a large number of external links, many pointing to disposable domains, consistent with a link farm used for SEO manipulation or distributing further malicious content. One URL, https://seumenha.ru/aws?utm_term=senorita+song+camila+cabello, was directly extracted from the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://seumenha.ru/aws?utm_term=senorita+song+camila+cabello PDF link annotation
    • https://fejoburu.weebly.com/uploads/1/3/0/8/130813906/seberoxemuku-rubitugexe-saxotowogu-rivoxuwala.pdfIn PDF document text
    • http://love-your-lips.online/edgar_allan_poe_o_barril_de_amontilladook0lr.pdfIn PDF document text
    • http://organicnu.info/warzone_2100_best_modsagbj7.pdfIn PDF document text
    • https://zowadadevifu.weebly.com/uploads/1/3/4/5/134597758/lexeror.pdfIn PDF document text
    • http://itasda.online/free_printable_treble_clef_worksheetskkfto.pdfIn PDF document text
    • https://femanutokit.weebly.com/uploads/1/3/3/9/133999532/6444da656.pdfIn PDF document text
    • http://greyfruit.space/download_the_martian_epub1qv27.pdfIn PDF document text
    • https://vexibalob.weebly.com/uploads/1/3/4/8/134896466/43844b90.pdfIn PDF document text
    • https://jaligudupu.weebly.com/uploads/1/3/5/3/135391073/rokixuvove-poraxuwanebova-gotujirawuw-gosasasewijo.pdfIn PDF document text
    • http://bit7.top/roblox_username_and_password_generatordu7up.pdfIn PDF document text
    • http://ttttrrrr.space/34294302311ifwxe.pdfIn PDF document text
    • http://wekeb.space/46682853739h59xh.pdfIn PDF document text
    • http://domainlimax.xyz/free_spades_app_with_jokers2hch9.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/sogovekevi/40568795258.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD996 5364 bytes
SHA-256: e29e2df8729ba0b5ac8501e68d8957ef8518d5965be4ae8ef62dc319ad80b810
font_01_sfnt_off0000ebbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBC 10564 bytes
SHA-256: 450969eaa01194831583e148690525171ff0d90617b56bead8d97ca045935364

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