Malicious PDF — malware analysis report

Static analysis result for SHA-256 4256bc4c52f43979…

MALICIOUS

PDF

97.5 KB Created: 2022-04-10 11:38:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 570a479a44f7f0ae00972c6efc49cb24 SHA-1: 6bee7c718ed19a7c35398bf18a27c5d6055c97a8 SHA-256: 4256bc4c52f4397943644346ec02e0a747cf2bb77ede32ffb4a5fadb906838a2
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 8

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://podar.co.za/YmrXLWy8?keyword=what%20is%20available%20on%20us%20netflix%20but%20not%20uk PDF link annotation
    • https://dawitomow.weebly.com/uploads/1/3/4/4/134439013/lataluf.pdfIn PDF document text
    • https://christavedelaar.nl/bestanden/files/wedusoliwu.pdfIn PDF document text
    • https://burakizu.weebly.com/uploads/1/3/1/0/131070688/1736520.pdfIn PDF document text
    • https://rokolumer.weebly.com/uploads/1/3/0/9/130969153/xoruzofamaxegek_nagore_volejegeve_bapobeninusabep.pdfIn PDF document text
    • http://vasset.bg/userfiles/file/sepot.pdfIn PDF document text
    • http://lscapital.it/images/file/modoloforojuler.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/110618101730.pdfIn PDF document text
    • https://sufevibuxaka.weebly.com/uploads/1/3/2/7/132712301/1834009.pdfIn PDF document text
    • http://eurogalvano.com/admin/kcfinder/upload/files/lapemilonoxaguvuwilut.pdfIn PDF document text
    • http://rent-lease-no1.com/userfiles/file/20220323075452.pdfIn PDF document text
    • https://bokakuvuzojoji.weebly.com/uploads/1/3/4/3/134351808/zuxoxilogazonelos.pdfIn PDF document text
    • https://gofiwazadin.weebly.com/uploads/1/4/1/2/141253856/6646030.pdfIn PDF document text
    • https://topifovav.weebly.com/uploads/1/3/4/5/134595147/4945856.pdfIn PDF document text
    • https://wirosumarot.weebly.com/uploads/1/3/1/3/131398493/bf10a5b2bc72ee8.pdfIn PDF document text
    • http://haki.vn/uploads/files/1048263081.pdfIn PDF document text
    • https://pepadamive.weebly.com/uploads/1/3/4/4/134468065/1762343.pdfIn PDF document text
    • https://wavikifetin.weebly.com/uploads/1/3/4/9/134901048/b05fe.pdfIn PDF document text
    • http://www.sg-callenberg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1620febeb3276b---tokijuravadujit.pdfIn PDF document text
    • http://gopay24.pl/app/webroot/js/kcfinder/upload/files/36350796108.pdfIn PDF document text
    • http://studionegrelli.it/userfiles/files/wejonubafuvexerupifimigok.pdfIn PDF document text
    • https://takigufumugo.weebly.com/uploads/1/3/5/3/135345847/1619613.pdfIn PDF document text
    • http://canoeing.by/pics/files/94843370832.pdfIn PDF document text
    • https://jopixedojowagi.weebly.com/uploads/1/3/4/8/134852439/vudelutofafaligu.pdfIn PDF document text
    • https://sapporopools.com/contents/files/9111263293.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001190b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1190B 17780 bytes
SHA-256: e5371c44bcb5a113183d8622668f063d53f51b5b70f1ebcdeeea99d2d61c758c
font_01_sfnt_off000146f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146F9 10704 bytes
SHA-256: fd39191049ee6c1f1d988b366badf69ed13b403a4cf7b5264b61152f0a98ec9e
font_02_sfnt_off00015f91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F91 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1