Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cdf51508de4534…

MALICIOUS

PDF

74.4 KB Created: 2022-03-30 02:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-25
MD5: 2b25acc990d8bb62bea592ece0eebbd2 SHA-1: d7ed572ee704af7c8a17e46e5d7c00049dee409d SHA-256: a9cdf51508de4534e7f259852965d9c467e2e86cdb4d8c872d2b1663fd4ef2d0
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://wofefuveti.weebly.com/uploads/1/3/4/3/134348775/rarilegisu_vifuno.pdf In PDF document text
    • http://1careglobal.com/upload/files/88949760672.pdfIn PDF document text
    • http://tranindo.com/Uploads/userfiles/files/93669275068.pdfIn PDF document text
    • https://nikigetevakawu.weebly.com/uploads/1/3/1/4/131413362/3409539.pdfIn PDF document text
    • http://xn--80aafbladvtbfgupeaecrgg.xn--p1ai/pict/file/18813050033.pdfIn PDF document text
    • https://tetuxexe.weebly.com/uploads/1/3/1/8/131871535/benafinizogataxus.pdfIn PDF document text
    • https://mama-light.net/business_school/uploads/file/guworapisiligisatabov.pdfIn PDF document text
    • http://biemmecommerciale.eu/userfiles/files/zisedagolakif.pdfIn PDF document text
    • https://musazulawikale.weebly.com/uploads/1/3/5/3/135305526/4363648.pdfIn PDF document text
    • http://acutecardio.ru/sadm_files/likimugoxobedexegu.pdfIn PDF document text
    • http://compufoxmail.com/FCKeditor/editor/filemanager/connectors/userfiles/file/zixadej.pdfIn PDF document text
    • https://kotedeturu.weebly.com/uploads/1/3/1/6/131606402/84e078.pdfIn PDF document text
    • https://noglehoma.com/ckeditor/files/files/56049999701.pdfIn PDF document text
    • https://sulesebu.weebly.com/uploads/1/3/4/6/134634805/dazugatiparobop.pdfIn PDF document text
    • http://bjdfszwy.com/filespath/files/20220205135215.pdfIn PDF document text
    • https://beburasitowetu.weebly.com/uploads/1/3/0/9/130969608/poxuzezexap-fufofowososafo-siburotibozade.pdfIn PDF document text
    • http://rc-saty.cz/gais/image/file/jinateginegitivivekedo.pdfIn PDF document text
    • https://manedubel.weebly.com/uploads/1/3/4/5/134587872/vinowur_lusojomune_bewemutok.pdfIn PDF document text
    • https://wirut.co.za/YmrXLWy8?keyword=how%20to%20get%20rid%20of%20acne%20scars%20on%20chest%20and%20back%20naturallyPDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000c02a.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c02a.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c02a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC02A 11280 bytes
SHA-256: dd17914e9b69270d2f0e8027efb5b4310ff5de711cb857808ea73955c22a4ab4
font_01_sfnt_off0000da68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA68 16468 bytes
SHA-256: c81f1cfa91c3c29b16296856c1e7edee0427ca65d3114fe31ad453b3d1e8d72a
font_02_sfnt_off0001051e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1051E 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336