Malicious PDF — malware analysis report

Static analysis result for SHA-256 be0e4c63ea50680e…

MALICIOUS

PDF

82.5 KB Created: 2021-05-17 09:45:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: c3ff3df930489709bafdc784ff81a967 SHA-1: e0a81a09e31093bbb99ee05e2d07ef5c227e7e84 SHA-256: be0e4c63ea50680ea8a74ccee4fc9ae7e8d69912d86f6d7a9bd7636f5f87e10b
186 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to various disposable domains and hosting services, likely for phishing or malware distribution. The primary URL suggests a lure related to downloading a marriage certificate. The ML classifier and ClamAV detection strongly indicate malicious intent, with the PDF structure and embedded links supporting a phishing or content-scamming attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://lozipotod.ru/strik?utm_term=marriage+certificate+d+form+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445890/normal_5fd6290ae6481.pdfIn PDF document text
    • https://budemarapi.weebly.com/uploads/1/3/1/3/131381681/nanokabaradoxed_rizemuwaruvuw_pufujamigeg_bebatogux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497395/normal_600f9072f2352.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490264/normal_60209a93c6d07.pdfIn PDF document text
    • https://biwasigefo.weebly.com/uploads/1/3/1/3/131398444/d9c3da5081b101.pdfIn PDF document text
    • https://xoxajunun.weebly.com/uploads/1/3/4/3/134351876/98b0e54.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/ggcgdhg/city_hot_wheels_racer_crate.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/5228179.pdfIn PDF document text
    • https://degumikiw.weebly.com/uploads/1/3/4/7/134724061/maliki.pdfIn PDF document text
    • https://cdn.sqhk.co/wumidimux/haK2hO3/best_app_for_free_italian_music.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5fe8e42ac8453.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/nBBhfgg/shoe_designer_fashion_shops_london.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445534/normal_603521c159739.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://s3.amazonaws.com/xujitezu/chocolate_malayalam_movie_hd_video_song.pdfIn PDF document text
    • http://vapodizasogore.epizy.com/arduino_uno_rev3_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/piano_sheet_music_pop_songs.pdfIn PDF document text
    • http://tupomomi.rf.gd/39228350609.pdfIn PDF document text
    • https://s3.amazonaws.com/rejiner/deterixoxinom.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B0 5048 bytes
SHA-256: e360432390c1d4a951f86b4129d9cad3cc64ff57c312e7c0a06a30bee588645a
font_01_sfnt_off000109ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109CE 10936 bytes
SHA-256: 551e1a0904301561c27d0a7f23e4b2df8bd864ba132e3dc81b1e4f30b68d9fc6
font_02_sfnt_off00012e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E32 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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