Malicious PDF — malware analysis report

Static analysis result for SHA-256 48542ba22686f6a7…

MALICIOUS

PDF

67.3 KB Created: 2020-11-23 15:37:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1b9a99b0ac5278544cc86967eb234fdb SHA-1: d6bdfeaefecc2ef838e7d03dc69b86b8915ad912 SHA-256: 48542ba22686f6a7a2f92f44030434079348b4f148a4df7737829edd70d81680
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 0.9997

Heuristics 5

  • 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.
  • 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://traffking.ru/aws?utm_term=androgenesis+adalah+pdf PDF link annotation
    • https://kagadema.weebly.com/uploads/1/3/4/4/134456650/66e399f17ec82ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483870/normal_5fa80c3eb91e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469617/normal_5fa46b131a0b2.pdfIn PDF document text
    • https://sabidodavo.weebly.com/uploads/1/3/1/4/131408103/sopame.pdfIn PDF document text
    • https://zelapagetuwuj.weebly.com/uploads/1/3/1/4/131406140/3d57301.pdfIn PDF document text
    • https://mipoxijal.weebly.com/uploads/1/3/4/7/134709746/bikobekuzovedu_wevig_putatojowonor.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://uploads.strikinglycdn.com/files/f1668bb1-fdd8-48f4-b030-f97b84a3c294/99953859489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c0efd81-f439-4b68-9fad-7a5f5007da20/88949088425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3d5efac-9e0a-49bc-a3c8-ec9ba520c99d/e_yener_belli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b16f4ee-283b-4028-abef-3d11bba1b87e/aura_kingdom_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/549ad169-743d-4e11-9090-31edee1346b0/vidafonelevidedegifinija.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_off0000bd51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD51 5000 bytes
SHA-256: efb1bbf69e615eab096c0f4caaa1367a5243b53656d1760a3cc5f52e47f21f5d
font_01_sfnt_off0000ce40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE40 10808 bytes
SHA-256: e4acc83fcb8e1764f81c5fd2976eb42a3f4f67b1a687a2c173ee3745a364002d
font_02_sfnt_off0000f2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BB 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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