Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e27d89c7f7f0a2f…

MALICIOUS

PDF

83.9 KB Created: 2021-03-28 05:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: faac7bf6ffedcaac2d4a04b0477c1735 SHA-1: 2d4add1f9e4d16124d1700405c43bd98f6ae9ea5 SHA-256: 3e27d89c7f7f0a2f58c0a45e1a273da0aee65894d22778689f7d190a39d14954
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The primary external URL, https://baarspo.ru/strik?utm_term=kenmore+elite+oasis+washer+error+codes+ul, indicates a lure related to appliance error codes. While no scripts were explicitly extracted, the PDF structure and numerous embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://baarspo.ru/strik?utm_term=kenmore+elite+oasis+washer+error+codes+ul PDF link annotation
    • https://cdn.sqhk.co/tadeketoxab/jbjjdig/neon_rider_world_unblocked.pdfIn PDF document text
    • https://rolutadaneked.weebly.com/uploads/1/3/2/6/132681657/344899.pdfIn PDF document text
    • http://jilavixit.medianewsonline.com/anti_monopoly_rules.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/two_branches_of_mathematics.pdfIn PDF document text
    • https://xodimazu.weebly.com/uploads/1/3/1/4/131408168/wewuzitubazidiz.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/3Cjbjie/samsung_pay_apk_xda.pdfIn PDF document text
    • http://kifejuja.medianewsonline.com/xufarotalanuduxojuz.pdfIn PDF document text
    • https://xuwogufovesuvem.weebly.com/uploads/1/3/1/4/131406895/sumuvemajemojowosulu.pdfIn PDF document text
    • http://fujigukatujewu.medianewsonline.com/favoki.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/hhiggiU/best_hero_movies_on_hulu.pdfIn PDF document text
    • http://buvalopexur.mygamesonline.org/diagnosis_of_bacterial_infections.pdfIn PDF document text
    • https://gobazivow.weebly.com/uploads/1/3/1/0/131070387/1495584.pdfIn PDF document text
    • https://cdn.sqhk.co/kakapoxavu/gfgfihi/85298957336.pdfIn PDF document text
    • http://xedeporib.medianewsonline.com/30052067321.pdfIn PDF document text
    • https://cdn.sqhk.co/noxutuvixi/ghhdlBe/gb_whatsapp_app_new_version_7._81.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://cc4f1b1a-08c7-467e-bb5a-e3073ad8caf1.filesusr.com/ugd/ffc175_22201959cf2e4de7a00df8ae9d29d17d.pdf?index=trueIn PDF document text
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_baef5a47f5994bd1a52bfd387e21749a.pdf?index=trueIn PDF document text
    • https://168d2a81-f750-40c6-a653-3787650f980d.filesusr.com/ugd/3bcfef_13e94cdfeb34491a9105118b656585f8.pdf?index=trueIn PDF document text
    • https://cef8af8d-7071-4339-ac50-fc417d371010.filesusr.com/ugd/a89196_89a70e7906f04bb8a268ce9991e7d23f.pdf?index=trueIn PDF document text
    • http://kikukuvikato.myartsonline.com/why_does_my_nec_projector_keep_turning_off.pdfIn PDF document text
    • https://cc0b58a5-7bf4-4b41-9cd7-d9bc0cd2cc6f.filesusr.com/ugd/6dc98b_d5244375136c43d4bf31aa630a64654a.pdf?index=trueIn PDF document text
    • http://kewetanetoza.atwebpages.com/lunatuzunonuna.pdfIn PDF document text
    • https://0d555108-1732-4721-8d72-76d747b2053a.filesusr.com/ugd/1b0481_5841147f60844e9383783b80c1323edd.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6E 5124 bytes
SHA-256: 59cb56b17df2a6a1fcff4b7c03b99c5c783cd7de72e434c67c6fbe64cce7d234
font_01_sfnt_off00010fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FAE 10556 bytes
SHA-256: 8af926ec2f65444b9947607c52fb6c3523abe789acb9f8eb77ce3ed1b81b0f77
font_02_sfnt_off000133c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133C1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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