Malicious PDF — malware analysis report

Static analysis result for SHA-256 c24acf896b424516…

MALICIOUS

PDF

76.0 KB Created: 2021-03-15 18:34:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ed3e72d38bfffdd6711553bd7a80a2e3 SHA-1: 5b1e623a97fd0392d89522c0a3e0c59d7539f2b5 SHA-256: c24acf896b4245166b6a05cab377e6882e184c880b35821b94d7a2e679100870
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 0.9997

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 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://baarspo.ru/123?utm_term=ariat+breeches+size+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4460058/normal_5fd62a4f652c2.pdfIn PDF document text
    • http://jurojegame.getenjoyment.net/14405939556.pdfIn PDF document text
    • https://xelopapet.weebly.com/uploads/1/3/0/7/130775154/bigevezumag-bapok-jopexuxugiza-pegaporonadaru.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/jajd38v/malayalam_murder_mystery_movies_2019.pdfIn PDF document text
    • https://goxapuvuf.weebly.com/uploads/1/3/2/7/132741714/419f4f9206cabb.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/25414754410.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/g6xmjbS/xoripevaf.pdfIn PDF document text
    • https://cdn.sqhk.co/joxusozomilo/ihPhihi/kaguwabeniwadirozekejinu.pdfIn PDF document text
    • https://cdn.sqhk.co/jikowuzu/jdheejL/happy_birthday_cake_pictures_with_name_ayesha.pdfIn PDF document text
    • https://keminozabigorez.weebly.com/uploads/1/3/4/8/134886120/1902786.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471234/normal_60236f0d774aa.pdfIn PDF document text
    • http://ladekepevij.mygamesonline.org/49243959347.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://faxiruvud.myartsonline.com/xokovixu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3163555f-6910-4be2-81c1-c131eba9f814/xamujotinolumasenafu.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/ram_dass_books_be_here_now.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab910139-6a62-473f-a382-bec0ad910d6d/71293586316.pdfIn PDF document text
    • https://d80868e2-5d34-4dda-9345-0396294a35aa.filesusr.com/ugd/f9fac6_5bb3f4bcc34e49f4bdb79d151ee2a3d5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e47c9598-e06f-4444-bb01-f3983634b8e7/how_to_rig_for_flathead.pdfIn PDF document text
    • https://d6504552-49b0-4b7d-b1ff-94f9e1082b83.filesusr.com/ugd/1f0558_b4438fa09cbd4faf84cb7320ef23394f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a709edb4-0df9-40cc-8445-10116db73c60/norcold_rv_refrigerator_will_not_work_on_gas.pdfIn PDF document text
    • https://a1bd7baf-2de3-4c81-8914-4b74a732ecf9.filesusr.com/ugd/c89f15_6230cec3ea764742b7a2ae491077f6a7.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

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_off0000ebf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF3 5348 bytes
SHA-256: 182f38452d0fcbcd9329e0cff940851d397a0864f98dadfc9df784079f124efa
font_01_sfnt_off0000fe19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE19 10800 bytes
SHA-256: 07c57b60cbe129e3393c8a0f081dc1b038299e4408f2062221d30d44c889f5db

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