Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e799c6482cddd2c…

MALICIOUS

PDF

80.9 KB Created: 2021-03-14 09:51:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 47e25364894fee3ceac7c4533554bdab SHA-1: 6e22c5c0850eedb312be5a109c39d8e69e3c996c SHA-256: 8e799c6482cddd2ce0c49d14357cdc1479a00ca6da15bddc08d680ed4f76ad6b
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://bologen.ru/wix?keyword=kinoman.tv+filmy+i+seriale+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416802/normal_5fca4c8b8f7f0.pdfIn PDF document text
    • http://tourist.fish/in_the_meantime_spacehogrcxi0.pdfIn PDF document text
    • http://homearfes.com/jimovokaxawoluxegowukv1f9.pdfIn PDF document text
    • http://sq11mini.com/julazubobijatowusurougtq5.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/conectgo.net_hackear_facebook5b4wv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402280/normal_6035e17e6c042.pdfIn PDF document text
    • http://iranomics.com/654217427640nk2e.pdfIn PDF document text
    • http://teasmall.space/plural_form_of_aufgabe_in_germanzmxts.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455180/normal_600d6d7d6bee2.pdfIn PDF document text
    • https://cdn.sqhk.co/lidupusumoj/W1gvdnN/fuwewuwupogajemij.pdfIn PDF document text
    • http://liketsven.xyz/56651717260moidh.pdfIn PDF document text
    • http://firstflirts.site/zubajifuviromivomop3zv30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461211/normal_6046338f144bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412583/normal_5fd822d8ea1ba.pdfIn PDF document text
    • http://stopnutristrike.ru/how_to_start_a_paleo_dieto1u86.pdfIn PDF document text
    • http://mjawebdesign.net/landing_page_templates_free_in_htmld3sgh.pdfIn PDF document text
    • http://cashthe.ru/ikea_bed_frame_twin_white2745v.pdfIn PDF document text
    • http://maddot.space/starcraft_2_vs_ai_cheatsqgc6u.pdfIn PDF document text
    • https://cdn.sqhk.co/minutakumu/Ljagchd/92019594124.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
    • http://watafewajur.rf.gd/book_inventory_sheet.pdfIn PDF document text
    • http://parezorizujax.rf.gd/80536046586.pdfIn PDF document text
    • http://risexogukif.rf.gd/tasuxumobosogabawiwem.pdfIn PDF document text
    • http://kugibujupedo.rf.gd/area_budget_application_form.pdfIn PDF document text
    • http://tupenanuziki.epizy.com/57516144526.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_off0000f29d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29D 4864 bytes
SHA-256: b0d72016c8e11b47fa068ef560624505973ca9b51cc5389068fe7733d0cae0cd
font_01_sfnt_off00010311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10311 10764 bytes
SHA-256: 5561c574a2b5481724a7e8ba93963f5463248b4a98bc2f7c1edc3ecf52a3b233
font_02_sfnt_off000127e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127E8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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