Malicious PDF — malware analysis report

Static analysis result for SHA-256 96322e36b2b2b6d2…

MALICIOUS

PDF

81.7 KB Created: 2021-04-28 01:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 959fec7d9255ca12c2b0207941e2c208 SHA-1: c00968b78bff8c3af240e649077f718cd411ceea SHA-256: 96322e36b2b2b6d27bc6023d316b030791bea32969f6eb90ed3da6b2330e0362
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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 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://nipisod.ru/strik?utm_term=pacsun+washed+black+ripped+%252790s+boyfriend+jeans PDF link annotation
    • http://megidexabaror.mywebcommunity.org/13019443343.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/hdc0jiu/prehistoric_definition_geology.pdfIn PDF document text
    • https://cdn.sqhk.co/subilikiwi/ehiLja4/tutadisepa.pdfIn PDF document text
    • http://sugoxebojun.getenjoyment.net/interview_questions_for_hr_executive.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bb3aacd-16ad-4161-9253-f58d8ffdc9a7/how_much_money_is_a_netherland_dwarf_rabbit.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/zuwemesegizokuza.pdfIn PDF document text
    • https://d17f4099-ecc1-42b1-9c73-51521793457c.filesusr.com/ugd/4a2613_ae238979007f4c138b25362f021f9d1c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d880157-73ba-444b-b087-1b20fa7acb3a/60073750075.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/bollywood_songs_dance_video.pdfIn PDF document text
    • https://f3dbd103-cf2f-44fc-b0ad-c9004dc38af2.filesusr.com/ugd/1f2646_43ab56cf9c924999a903c8ad0c67a768.pdf?index=trueIn PDF document text
    • https://cfc603e6-7cd4-4c42-812b-9722deb80ae4.filesusr.com/ugd/0e9fc2_ec90ffff097d47148b1b2cdc0df7ccbc.pdf?index=trueIn PDF document text
    • http://widepidaba.atwebpages.com/jemixuvuzowumojiledu.pdfIn PDF document text
    • https://c4bedd8b-a3e9-4aa8-9751-a6fde4035b7e.filesusr.com/ugd/037f08_1dbf71fb8d2249f0bc67328323f27960.pdf?index=trueIn PDF document text
    • http://zevesijuduma.atwebpages.com/vingcard_2800_loading_os.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/majubukuna.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/sotiwebatuli.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_off0000f1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CC 2988 bytes
SHA-256: f5ddbcf5b609e13701cb72e40b65c4fcce4f49cdb24c9397deb5622f67bbbc53
font_01_sfnt_off0000fc69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC69 6048 bytes
SHA-256: d5ad64ad7b5996c0ce80be9c6a82ed5131abc408676f5478f1d1f2e6deb6b696
font_02_sfnt_off00011115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11115 11616 bytes
SHA-256: 2e87b9bfbe664420f96c6e2d956bf938b4d7b88c04dbad2672c2025643028ed1

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