Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6950c22cbb532c…

MALICIOUS

PDF

73.2 KB Created: 2021-04-04 22:35:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2dc44b0706c854bd141022ff174d2029 SHA-1: 1f26ec69be1a6fe816ab569e18ae027c6ec665f5 SHA-256: 6d6950c22cbb532c4d5702a0f4c722950b536e68651793b54dc8c2760814cb92
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/strik?utm_term=free+printable+word+search+puzzles+for+adults+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475854/normal_6038d0aec3879.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408483/normal_5fdeb1348deaf.pdfIn PDF document text
    • http://housefashion.ru/how_riddex_plus_worksogxzw.pdfIn PDF document text
    • http://fepasorugon.22web.org/sululinoma.pdfIn PDF document text
    • http://1xbet-registr.site/how_to_convert_metric_units_using_the_ladder_methoddoir9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466408/normal_5ffe6c1fc4d9c.pdfIn PDF document text
    • http://cheapkeys.site/aimbot_free_pcng1fc.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/8d35c02d-39a6-402e-825d-54b2681a852c/oracle_database_security_controls.pdfIn PDF document text
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_519b43d22bfb4f24982b97ca987e31e8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/aebe8edd-7ee5-45de-b941-c1ed34bd70c7/is_taco_bell_safe_to_eat_while_pregnant.pdfIn PDF document text
    • http://bobupugarini.epizy.com/59914232785.pdfIn PDF document text
    • https://b5c90759-dbf8-4ccd-b12d-e23c958527f9.filesusr.com/ugd/915a55_f1e504aa7ae043c889be3456da2b6ae7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe4837ce-90fe-4b07-8e6f-5250ef87f1ca/braven_brv-1_portable_wireless_speaker.pdfIn PDF document text
    • https://de315c38-daa2-4293-b666-e554ba9b7d65.filesusr.com/ugd/564d2e_39a09686d6e34cee8e32ab2fb847b118.pdf?index=trueIn PDF document text
    • https://56352102-112a-4456-a677-0775450c4ed3.filesusr.com/ugd/ed4e87_68376234a2a7487d835550f65f36edf0.pdf?index=trueIn PDF document text
    • http://sirovorisolilu.rf.gd/abortion_book.pdfIn PDF document text
    • http://girijasesevuso.epizy.com/catalogo_natura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ea98c4-b330-4148-82c7-b715c1780bef/pabibinewuwijugesagoman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c7d1186-7112-4804-b0a1-8d140756d7c7/does_dunkin_donuts_have_munchkins.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e00f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00F 5480 bytes
SHA-256: 1b94d703a72498ba19d3f33959df549759716c5c63d29d3a73203e4f8eb624bf
font_01_sfnt_off0000f2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C1 10724 bytes
SHA-256: 066c754bca00a2f7e340237d1eee702a53e80a859901dfbb423d17077805a81d

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