Malicious PDF — malware analysis report

Static analysis result for SHA-256 46cc5ba5e609d95d…

MALICIOUS

PDF

92.6 KB Created: 2021-04-03 00:16:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2266a460bc6f8f61a2a140607d12253f SHA-1: 7032b35bd7b238b0e1ebf5c3abf1c907ed96bbed SHA-256: 46cc5ba5e609d95d45c703af738397cc8d16aaf66f094d4a4d368ba6d947447d
186 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, indicating it is part of a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the presence of numerous URLs points towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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://lozipotod.ru/wix?keyword=mobestiary+online+pdf PDF link annotation
    • https://cdn.sqhk.co/sixerusesebu/fgcicNj/women_s_clothing_thrift_stores_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/norumuwapa/kjdmVDS/91055022478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463286/normal_604828ffbe75d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487381/normal_5ff88c0551e6e.pdfIn PDF document text
    • https://cdn.sqhk.co/pobopuwubox/aWhg0ge/two_hearts_emoji_png.pdfIn PDF document text
    • https://cdn.sqhk.co/duzupafuj/bhfL6rZ/private_downloader_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490269/normal_60606a1c60ed9.pdfIn PDF document text
    • http://xazapefunel.getenjoyment.net/tixafemabopafatosojolowe.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/hbghkC6/gepulutebigiroliwagopijed.pdfIn PDF document text
    • http://watogoda.mypressonline.com/couples_therapy_exercises.pdfIn PDF document text
    • https://cdn.sqhk.co/guletema/Kghfjce/83855085039.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
    • http://badamowafe.onlinewebshop.net/marketing_plan_report.pdfIn PDF document text
    • https://d4180a97-8dd0-4bf1-9e2f-d1b128d1a64d.filesusr.com/ugd/ae059d_8f3c0f9ba9224cdd86acf4407f262a48.pdf?index=trueIn PDF document text
    • https://8e0cabef-d481-4215-b437-8a5fc4e4723c.filesusr.com/ugd/f41140_6487d98361f745bea3d8defb5958cc36.pdf?index=trueIn PDF document text
    • http://xejawaji.myartsonline.com/carlos_castaneda_english.pdfIn PDF document text
    • https://76bf42c0-7447-45ed-8dd3-33f9786ae3ae.filesusr.com/ugd/ba2c19_1ab8741976484b1cb7fa803b1dcd5ed9.pdf?index=trueIn PDF document text
    • https://4900ecec-7ac1-411c-be2c-b077674085c8.filesusr.com/ugd/493135_71ec24e5adcf42abbbfd7eec00556bd6.pdf?index=trueIn PDF document text
    • https://d4e73f68-9870-4c81-be0c-0a6dd7607cd2.filesusr.com/ugd/6f53d7_7176067903ff43ee80ec74c945d33ed3.pdf?index=trueIn PDF document text
    • https://c2267750-1f6d-4c2f-944a-eb302c7f07d7.filesusr.com/ugd/93971e_e3bc5b56c1cf4b17abcb20adf17592e5.pdf?index=trueIn PDF document text
    • https://6bfd3344-23d3-4e03-ab7d-00c1c23eecf6.filesusr.com/ugd/be19e1_984e1784bbc242a3ab26ae2e28a2461d.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FC2 5068 bytes
SHA-256: bb6771fdae1f292a52cf3144e76a3f2f03d3b8040037eb50eadef713eaae1a75
font_01_sfnt_off00013108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13108 11232 bytes
SHA-256: a9a2186ff124b8f8627b56e1bfe6df8ea16d4239f873a2135789136de7875201
font_02_sfnt_off00015761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15761 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176