Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a28123f95942df9…

MALICIOUS

PDF

69.7 KB Created: 2021-03-05 00:30:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 94216998416c9f95e67158cd7cb583de SHA-1: 382457dd9f9aaececb7de34310c554638c9e2f4d SHA-256: 0a28123f95942df90f900c68b4f389b6d84b03d69c09289938361c28bbcd0983
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/award?keyword=graco+pack+n+play+with+changing+table+and+bouncer PDF link annotation
    • https://cdn.sqhk.co/toralapiluw/QHTgeig/strikemaster_40v_ice_auger_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/jghaqme/virusodaruzet.pdfIn PDF document text
    • http://niburufajanuto.sportsontheweb.net/3736889167.pdfIn PDF document text
    • https://cdn.sqhk.co/totafeta/c44higv/82959177181.pdfIn PDF document text
    • https://cdn.sqhk.co/zolususux/yihibhd/ludofebebatorabupan.pdfIn PDF document text
    • https://janejamav.weebly.com/uploads/1/3/4/8/134887015/mapezimutusunilivi.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/nghdrjj/gukirovojurepibipodej.pdfIn PDF document text
    • http://wedipum.mygamesonline.org/how_to_clean_8610_printhead.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluzagile/ZvEJUii/tizorisiduxibepemitemox.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/jajcSih/meteor_shower_august_2019_uk.pdfIn PDF document text
    • http://dejepuzalew.mygamesonline.org/10725282851.pdfIn PDF document text
    • https://cdn.sqhk.co/ranuvore/YgKjbgc/ruvumidemitilirijose.pdfIn PDF document text
    • https://cdn.sqhk.co/lajagika/hi3xUih/96232763296.pdfIn PDF document text
    • https://cdn.sqhk.co/vedukosamo/bFherhj/exorbitant_privilege_eichengreen.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/ReiixKK/zopixe.pdfIn PDF document text
    • https://filavemegu.weebly.com/uploads/1/3/4/8/134883773/1477026.pdfIn PDF document text
    • https://xumagatovonag.weebly.com/uploads/1/3/5/3/135312495/1225ff4b.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/bjhmjjh/dino_world_jurassic_builder_mod_apk_revdl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kosezofejesuxef.atwebpages.com/sapubamujomefajeworufosi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1B9 5588 bytes
SHA-256: 670984fdc7231797277e23abba9cb985e933ba23249430b4ab1a08b596be4ca4
font_01_sfnt_off0000e4cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4CB 10088 bytes
SHA-256: 0ab6852bca3f255e1f03171978aff0aeb5f21c6a4887408db55035839d9ee4d2

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