Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff83af10ff1cd01…

MALICIOUS

PDF

67.9 KB Created: 2021-02-19 18:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 73068e1dfd5ac39be3f6c73590f375a8 SHA-1: f2fc47d9278b3139b5da486beb62f61b40d2b1dc SHA-256: aff83af10ff1cd0127ee3a1179247ebefb823ec615eebfc05bb64798486ce8bc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=unmatched+air+traffic+control+hack+version+download PDF link annotation
    • http://pojekofa.iblogger.org/60660813494.pdfIn PDF document text
    • https://kuwobudub.weebly.com/uploads/1/3/4/5/134587752/fixorekufibilox_fipifiki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391013/normal_5ff08e7fc76f2.pdfIn PDF document text
    • http://good-production17.site/74770371630yo4nm.pdfIn PDF document text
    • http://nukels.xyz/76392271203mnkts.pdfIn PDF document text
    • http://namelesssouth.xyz/aflac_claim_formsc7red.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413845/normal_601c7cfaf31fc.pdfIn PDF document text
    • https://xubafema.weebly.com/uploads/1/3/4/4/134447535/negegigejox.pdfIn PDF document text
    • http://vakimudefevu.22web.org/virginia_prentice_hall_mathematics_algebra_2_answers.pdfIn PDF document text
    • http://vukabuv.22web.org/tasulibikake.pdfIn PDF document text
    • http://oneitshop.info/formal_business_attire_female_storesvv2g9.pdfIn PDF document text
    • http://uptodate.site/wedding_invite_information_card_templatej8neh.pdfIn PDF document text
    • http://pupalara.22web.org/398146887.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gidobiladuk.rf.gd/ashampoo_burning_studio_2019_full.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_off0000cb86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB86 5468 bytes
SHA-256: 64d3089755bdbd0ca1ce4753a374260b9d27968b67b11e82ad2331d93b7c4778
font_01_sfnt_off0000de08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE08 10936 bytes
SHA-256: ca5e52ce3da076e31f6f4ab19611a4b3112d8d26b146a4d9b7286f023367ddf9