Malicious PDF — malware analysis report

Static analysis result for SHA-256 74b340bf0ef347ac…

MALICIOUS

PDF

78.3 KB Created: 2021-03-08 17:27:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9f9e67730ff21d60d038308ea2f19ff7 SHA-1: 3f9e37fa497fe478de9d7f25c7ef14be1cc9552d SHA-256: 74b340bf0ef347ac47e4122e450c21a48a3092025cbf14bd43df0f959f1a62ec
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 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.
  • 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=first+carlist+war+uniforms PDF link annotation
    • https://cdn.sqhk.co/rojarasam/jJKgcjg/67468727742.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/opgfEid/95295733435.pdfIn PDF document text
    • https://cdn.sqhk.co/xurakipigub/ifjaOib/games_like_knock_em_all.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/BLUgjSH/the_jackbox_party_pack_ps4_review.pdfIn PDF document text
    • https://cdn.sqhk.co/sizafutito/bGjxgcE/xesuvuwiguraxukowezoreta.pdfIn PDF document text
    • https://cdn.sqhk.co/dalubevemex/Fjfhhgg/2267624331.pdfIn PDF document text
    • https://cdn.sqhk.co/pavoraxebute/ajfiiWJ/24410485228.pdfIn PDF document text
    • https://cdn.sqhk.co/lididiregi/4geQieh/lokuzoketa.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/bRijrhi/murder_hornets_2020_meme.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/Aifgj7t/87214919472.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/gesvNgc/wisisuramozusiwixefepen.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
    • https://uploads.strikinglycdn.com/files/030000cd-a07f-4795-a0e8-665bb10de483/top_30_hr_interview_questions_with_answers_for_freshers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee7d4406-5e70-4989-961d-7be427370e8a/physical_and_chemical_properties_of_seawater.pdfIn PDF document text
    • https://f110cc6a-49d6-427c-9ab6-a3a4d323b004.filesusr.com/ugd/9e53d4_74f3b56335bd43528f63c42c9dc14cd9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ace968e7-139a-4a1c-8288-040a296f53c6/80368436497.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35834321-5896-4e88-a082-17bf64a8d5c4/91470597813.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef21ed50-e704-4947-a616-eee47ec9071f/why_has_my_apple_ipad_keyboard_stopped_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd0ea6e1-3695-428d-9716-4055305e0f1d/xemodibeserorufopaxoto.pdfIn PDF document text
    • https://856cb5e6-6c81-45ce-9604-b57907a15cd2.filesusr.com/ugd/cc3ca9_b7199fe2b1d148f49d71e3615d5e1cca.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2f296ce-03af-4320-92bb-32502bd7971f/how_to_stop_candle_flame_flickering.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 4

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_off0000e82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82C 4840 bytes
SHA-256: e47130563a4e65d7229b190d1870e2bca1aae8d6d67d3bda4ab2fb834027098f
font_01_sfnt_off0000f889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF889 11264 bytes
SHA-256: defd65ca68b3ad567f80650ec95bef3c56f7670d9474162ea593079f4d3a3319
font_02_sfnt_off00011de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE5 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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