Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bce1e3a432af657…

MALICIOUS

PDF

86.0 KB Created: 2021-05-23 15:29:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: bf6878c2b84b913e4af66ed4787d4b75 SHA-1: dd98ad46b01409b99feada31cdcfe85bd20de78f SHA-256: 3bce1e3a432af657248a32edc62244bb9021436e2e8b483365022b18a10c0aba
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://dugedepap.ru/strik?utm_term=seven+deadly+sins+in+the+picture+of+dorian+gray PDF link annotation
    • https://kigivagup.weebly.com/uploads/1/3/4/3/134396191/d11dd63c4a447b.pdfIn PDF document text
    • https://teroxomiguwadi.weebly.com/uploads/1/3/1/3/131380052/4419819.pdfIn PDF document text
    • https://fukuperuka.weebly.com/uploads/1/3/4/8/134883813/vokelaku.pdfIn PDF document text
    • https://xilivixawigilu.weebly.com/uploads/1/3/4/6/134672458/govipakaz.pdfIn PDF document text
    • https://noxesole.weebly.com/uploads/1/3/4/6/134615833/gevego-zuxifoxozazesif-wikudar-gopeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494160/normal_6038554d374c1.pdfIn PDF document text
    • https://gofazawadatefit.weebly.com/uploads/1/3/5/3/135349405/nemowijow.pdfIn PDF document text
    • https://rofoxanubojinud.weebly.com/uploads/1/3/2/7/132740779/6775301.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504922/normal_5fe2ca2690ba6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460042/normal_603e61e64e5ef.pdfIn PDF document text
    • https://gumevuwogixuxuj.weebly.com/uploads/1/3/5/3/135317748/tuvaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456389/normal_60665ba47b4ae.pdfIn PDF document text
    • https://finubakexa.weebly.com/uploads/1/3/1/3/131383318/aee087e8aaac.pdfIn PDF document text
    • https://xovewelokajefi.weebly.com/uploads/1/3/4/8/134864882/6017a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453909/normal_5ff630e739e4f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sefipa/baixar_apk_twitter_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/dibuligitemet.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/sovopivoxijun.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/sobituv.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/msi_gtx_970_price_philippines.pdfIn PDF document text
    • https://s3.amazonaws.com/xidulumexi/cisco_spark_board_70_user_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAB 5564 bytes
SHA-256: 83678f005171d2fa160829a39615601f6250c356c4fc3ed2bd8875fce61cc322
font_01_sfnt_off00011296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11296 12212 bytes
SHA-256: ca33405cc0674f479a7a1722e912f052ac00f1e530ea496407f07540bb303aae
font_02_sfnt_off00013a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A85 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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