Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0be2ad5b6d7893a…

MALICIOUS

PDF

71.3 KB Created: 2021-03-03 19:33:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 0a2e817049350e2c4decb027daba2120 SHA-1: 4333343f20e031b6c45204b542296bfcd9d92bd1 SHA-256: a0be2ad5b6d7893a6d534654d40875e7f938557355b9dbd769d72ff0eac9d0a8
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://bologen.ru/award?keyword=what+is+the+rarest+myers+briggs+personality PDF link annotation
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/xenipaz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384839/normal_5fe40aeb6fade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489601/normal_5fe78ff58f696.pdfIn PDF document text
    • https://cdn.sqhk.co/mutexeze/hjifhi4/pakisaxinefabikipefupilup.pdfIn PDF document text
    • http://spain50off.info/daribinobezevutatovdkhwz.pdfIn PDF document text
    • https://jadojojipolukot.weebly.com/uploads/1/3/5/3/135337887/1c2743.pdfIn PDF document text
    • https://fezapatinegu.weebly.com/uploads/1/3/4/2/134266508/xisoxo.pdfIn PDF document text
    • http://netlysy.online/mmpi_2_questionnaireenkbo.pdfIn PDF document text
    • https://cdn.sqhk.co/wovupeni/xbiax0S/39027709491.pdfIn PDF document text
    • http://starconflict-game.ru/printable_ekg_rhythm_flashcards0kmma.pdfIn PDF document text
    • http://mestorating.ru/40051501931t0wtl.pdfIn PDF document text
    • https://xupovefodifej.weebly.com/uploads/1/3/6/0/136053951/busumewosogodo-jenunej.pdfIn PDF document text
    • https://wowumufugijakig.weebly.com/uploads/1/3/0/9/130969685/kumagabonovarux_simozusuxolazi_ruzebupado_beputem.pdfIn PDF document text
    • https://somuwozav.weebly.com/uploads/1/3/4/5/134525430/lovizuwovetugidimuvi.pdfIn PDF document text
    • https://cdn.sqhk.co/purorenutuw/gcXeLq2/95075674402.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/litunux/jimeb.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_off0000da19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA19 5488 bytes
SHA-256: f425cc7dcc2f0f894e99d83b3776eb7367886c17808918e6e5f08c3c1a4fc899
font_01_sfnt_off0000ecad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECAD 10340 bytes
SHA-256: c22f23e2ab7ca4ec248e2849f42bba5fc5c27015c82abdf1e1c2fa8147587539