Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9cd52213eaa9b0c…

MALICIOUS

PDF

78.6 KB Created: 2022-03-30 19:53:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-27
MD5: c2e4565cdca082582750af84ba72e8b5 SHA-1: defc4f2b9984fbd68b95e33dc942de3f02e60fc6 SHA-256: a9cd52213eaa9b0c95c7d17d9570dd22d6fe1a0c4142ff71f6489c6c1c57cee4
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://fontini-rozetki.su/kcfinder/upload/files/32286850576.pdf In PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/f2c3cb10a360ef.pdfIn PDF document text
    • http://zhongkerb.com/userfiles/file/43694649645.pdfIn PDF document text
    • https://xukovefekafevut.weebly.com/uploads/1/3/0/9/130969731/9654063.pdfIn PDF document text
    • http://softtox.pl/new/userfiles/file/muvopupemivozujiru.pdfIn PDF document text
    • https://rawewefugu.weebly.com/uploads/1/3/4/3/134394717/rukuzefuxu_gevezidogemuli_tumuwivobib.pdfIn PDF document text
    • http://customartdirect.com/kcfinder/upload/files/kujaji.pdfIn PDF document text
    • http://www.eintracht-bayreuth.de/kcfinder/upload/files/53016253954.pdfIn PDF document text
    • https://dudumudisedaj.weebly.com/uploads/1/3/4/5/134591614/batumodu.pdfIn PDF document text
    • https://ikincielinmak.com/upload/ckfinder/files/sunovisig.pdfIn PDF document text
    • https://legufita.weebly.com/uploads/1/3/4/8/134866723/2317614.pdfIn PDF document text
    • https://gunma-komei.com/pic/files/75953036533.pdfIn PDF document text
    • https://nuwusiran.weebly.com/uploads/1/3/5/3/135321198/ceac30b70f.pdfIn PDF document text
    • http://online-editor.menu-card-maker.com/uploads/files/dovigawovisenozinijalutu.pdfIn PDF document text
    • https://vikta-fish.ru/upload/files/vokug.pdfIn PDF document text
    • https://tixatodaja.weebly.com/uploads/1/3/4/5/134507568/litaxepagowivumof.pdfIn PDF document text
    • https://kolkatanagariksammelan.org/ckfinder/userfiles/files/53536258640.pdfIn PDF document text
    • https://nesutidixet.weebly.com/uploads/1/3/4/7/134724555/5051719.pdfIn PDF document text
    • https://jejaparax.weebly.com/uploads/1/3/5/3/135332208/zirifebe.pdfIn PDF document text
    • http://www.bandicka.cz/upload/files/zidemuson.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/4tth6qg5993fo2oc796sqno423/57314169870.pdfIn PDF document text
    • https://chambres-hotes-aube-bleue.fr/userfiles/file/39437325096.pdfIn PDF document text
    • https://lazav.co.za/YmrXLWy8?keyword=can%20grapes%20cure%20cancerPDF 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_off0000d0f0.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000d0f0.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F0 17052 bytes
SHA-256: b7f7197f8e4acdd6b01bfcbea3673be424e09f2330d415e56ae57acd10ca1c3e
font_01_sfnt_off0000fdb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB2 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00011456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11456 10324 bytes
SHA-256: 20607bb77b9b52dee901d199ff997b1c7472602e22bfb2f74e8858afb5a59e83