Malicious PDF — malware analysis report

Static analysis result for SHA-256 82e797c3d0ce6989…

MALICIOUS

PDF

67.7 KB Created: 2021-03-01 01:43:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7d1aee224da4ed79794da42f305a68e9 SHA-1: b7c11a352fa86cb0a24e48c0729ad9b832ae9442 SHA-256: 82e797c3d0ce698912e18453be86333db933f4fbffcc24722064c478a1c59443
186 Risk Score

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://xajibur.ru/award?keyword=fedex+job+fair+memphis+tn PDF link annotation
    • https://sufodawopej.weebly.com/uploads/1/3/1/4/131483154/xalan_fedisizikutat_xojabefagid_fipujorajox.pdfIn PDF document text
    • https://cdn.sqhk.co/xavaxonad/cichfih/free_photo_editing_software_32_bit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408993/normal_5feb72b2399b7.pdfIn PDF document text
    • http://raisinslabs.club/2008_dodge_grand_caravan_batterys9rrb.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/2Ghhxja/roku_ultra_review_youtube.pdfIn PDF document text
    • http://apkweb.net/which_of_the_following_is_not_a_suitable_assignment_statementoum9a.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/hggAcjd/this_means_war_lyrics_shovels_and_rope.pdfIn PDF document text
    • http://tizezs.xyz/faiq_biochemistry_freeobg7b.pdfIn PDF document text
    • https://cdn.sqhk.co/xobakidanav/73hgVKL/69312870389.pdfIn PDF document text
    • https://vamexerop.weebly.com/uploads/1/3/6/0/136085595/01145cfd2b8876.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/NT2cjaj/75530895592.pdfIn PDF document text
    • http://bellissimo.online/how_computers_work_simple_explanationnst07.pdfIn PDF document text
    • https://pazaduzot.weebly.com/uploads/1/3/4/4/134473777/lokajakedezuji.pdfIn PDF document text
    • https://cdn.sqhk.co/perikowep/Ohfiejc/muraxiwiba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407724/normal_5fedab956ed01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474457/normal_5ff3c2278b269.pdfIn PDF document text
    • https://cdn.sqhk.co/sawowudin/hQsjije/chickamauga_battlefield_visitor_center_fort_oglethorpe_ga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409630/normal_60039944388bb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE2 5488 bytes
SHA-256: 24ea55a9242bb86066c06fee59ce0ec65d66e3544ff2df31aa13aaadcded576e
font_01_sfnt_off0000de66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE66 10204 bytes
SHA-256: 9de9e02219cf53d25d4d88c8b53afcab8284e4e7343662dc7e2012ff593c993e

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