Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa4783bbc262db1…

MALICIOUS

PDF

72.8 KB Created: 2021-03-01 14:13:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 5efbaccc0ab2a0e4d01eed98b21d6d53 SHA-1: cace6b626e7d4d232c3e198ab49c16d0fda2c6be SHA-256: baa4783bbc262db10503381ff2c51f17b2c799c104b66db68fc09558d380aeeb
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://golowaki.ru/award?keyword=how+to+heat+up+tamales+in+a+pot PDF link annotation
    • https://cdn.sqhk.co/sozimelizak/fhijfje/mobirumepo.pdfIn PDF document text
    • https://cdn.sqhk.co/wojidumezu/mhhWiei/fudovepu.pdfIn PDF document text
    • http://wownatural.fun/how_do_i_save_an_email_as_a_on_a_mac50tzp.pdfIn PDF document text
    • http://bestplacefor.rest/8977159298485w1i.pdfIn PDF document text
    • https://cdn.sqhk.co/vapumojemov/bJsZjb5/89586460513.pdfIn PDF document text
    • http://indital.fun/power_thoughts_365_daily_affirmations_louise_hayrwz9f.pdfIn PDF document text
    • http://xteenware.online/27277347719mxdfl.pdfIn PDF document text
    • https://penoruzeni.weebly.com/uploads/1/3/4/1/134132400/dususafidumel.pdfIn PDF document text
    • https://cdn.sqhk.co/jusupovexewa/Ohafxgc/34943773173.pdfIn PDF document text
    • https://cdn.sqhk.co/lazuxorus/gChb7ig/givum.pdfIn PDF document text
    • http://salea.site/49810915329oegos.pdfIn PDF document text
    • https://cdn.sqhk.co/satofurijob/bEje0IV/pottery_barn_stockings_knit.pdfIn PDF document text
    • http://shopwithsale.website/pilupufivususuxexexalaidjyo.pdfIn PDF document text
    • https://cdn.sqhk.co/wavefekus/id3hdg4/multi_puck_hockey_game.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_off0000e315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE315 5016 bytes
SHA-256: 5037baad735e7d2f89047482af4315fd9f3ca100c819f61b53cbc35f254079bd
font_01_sfnt_off0000f40a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF40A 9980 bytes
SHA-256: 91b61e6be2953c7443e9fea940a91efc57bc1078abc90759b316cfb0db30c018