Malicious PDF — malware analysis report

Static analysis result for SHA-256 7042053bbc873ad6…

MALICIOUS

PDF

61.7 KB Created: 2020-11-28 22:07:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3b7f0182960357294860b8609516e03a SHA-1: 961dd7f3067e958ddb0b03dbcb76692e56928431 SHA-256: 7042053bbc873ad6ae48afe5b197f56d75ab7215f1d93d4b12e2221097bb3251
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. One of the primary URLs observed is https://traffking.ru/aws?utm_term=a+h+g+full+form, which likely serves as a redirector to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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://traffking.ru/aws?utm_term=a+h+g+full+form PDF link annotation
    • https://zusadubojurumez.weebly.com/uploads/1/3/4/7/134703186/1813659.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379726/normal_5f9a0cc91f088.pdfIn PDF document text
    • https://gafujoneruxuf.weebly.com/uploads/1/3/4/7/134728567/xokoga_zukosiredaxaxi_zazukesin_xemamozetipa.pdfIn PDF document text
    • https://venifamu.weebly.com/uploads/1/3/4/5/134501621/3d403f.pdfIn PDF document text
    • https://katolafafesol.weebly.com/uploads/1/3/4/4/134479470/3ec780a2f9d.pdfIn PDF document text
    • https://rivibesosad.weebly.com/uploads/1/3/4/5/134529272/2ac044536282.pdfIn PDF document text
    • https://miburinu.weebly.com/uploads/1/3/4/4/134464577/lunulizuragebesol.pdfIn PDF document text
    • https://gogimorezi.weebly.com/uploads/1/3/4/3/134316220/keruwupaj-xemapuso.pdfIn PDF document text
    • https://jiwugulepegewi.weebly.com/uploads/1/3/4/7/134717460/2248091.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/e202a26a-9b09-4455-808a-47bfa5dfd1c0/cleveland_county_school_calendar_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a2f7a3c-7816-4c27-afac-ce917a1066f8/bukix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3df69e83-15cf-4bae-8fbe-b664e877f48e/27341295635.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7959b099-f1d0-4828-ae09-911f4f40c79c/puzibuvubefifozogivorabux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa6e7a1f-4e66-4111-a014-a88b1657129a/mijod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8b5eb4c-3be5-41d6-84dc-6f822942c8f3/oh_my_girl_jiho_plastic_surgery.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_off0000b583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB583 4784 bytes
SHA-256: 14358fc429b947e741210a8d560fa0b55cd3912bc776598ec2a11d21f579ff15
font_01_sfnt_off0000c5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5A5 11016 bytes
SHA-256: 12b48859be2a82da0f4b8eafc226ee270984cce0ce3310e156e0d75a96817b66

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