Malicious PDF — malware analysis report

Static analysis result for SHA-256 9410a03a6ccf00d9…

MALICIOUS

PDF

92.3 KB Created: 2021-10-15 07:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 3a97392273eabb2e6af9ce24a2756ed0 SHA-1: df90ef0da8fbb2a29ef2194ceb0ce8724f292d91 SHA-256: 9410a03a6ccf00d98021f099f06860c6e1c2ab726bce6f8c559ce428995fbd46
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file is a PDF identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to various domains. Several of these URLs are hosted on compromised CMS upload storage, indicating a potential distribution point for malicious content or phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://samsungklimamodelleri.com/upload/ckfinder/files/rokudoj.pdf In PDF document text
    • https://mauspro.net/upload/files/kisanukokixekozopepasapur.pdfIn PDF document text
    • http://worldofpacifiers.com/editor_uploads/system/files/piwetokumifi.pdfIn PDF document text
    • http://devison-matras.com/upload/file/ledagumagovifeja.pdfIn PDF document text
    • https://temahr.hr/files/geperokula.pdfIn PDF document text
    • https://essaidafm.com/uploads/FCK_files/file/89414400527.pdfIn PDF document text
    • http://kqcme.yiaiwang.com.cn/upload/files/tegatati.pdfIn PDF document text
    • https://dtd.com.pk/ckfinder/userfiles/files/sologepufatetipedopum.pdfIn PDF document text
    • http://astmasme.com/userData/board/file/46778421815.pdfIn PDF document text
    • https://www.studioline.ie/ckfinder/userfiles/files/fabimagiziv.pdfIn PDF document text
    • http://aptwash.com/userData/ebizro_board/file/zikabavejaboxonasedogowad.pdfIn PDF document text
    • http://cakenepal.com/userfiles/file/wazuvofenedut.pdfIn PDF document text
    • http://secondhandgraphics.com/usrfiles/file/kaguxiraxoxusinesunaduvid.pdfIn PDF document text
    • http://eastmanllc.net/ckfinder/userfiles/files/32381318906.pdfIn PDF document text
    • https://anjingliar2.com/contents/files/87645845978.pdfIn PDF document text
    • https://matrainagycsalados.hu/userfiles/file/5416061117.pdfIn PDF document text
    • http://severstroysnab.ru/userfiles/file/runedaze.pdfIn PDF document text
    • http://wellnesszeewolde.nl/site/data/ws/files/59613109219.pdfIn PDF document text
    • http://iuoooo.com/filespath/files/20211008185742.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16162313d6650e---58827010803.pdfIn PDF document text
    • https://happycolaborativo.com/uploads/files/7808722165.pdfIn PDF document text
    • http://inter-travel.hu/_user/file/47421009800.pdfIn PDF document text
    • http://intelekt.biz/uploads/pages/files/zujoxuxopizojilipuvefip.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/dk0ho41nqtqqd8nhorb4qlfq8bs376ch/12000107312.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1615ffef8294bc---15021890646.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/2I9n2o-U8HI/uplcv?utm_term=fortify+smithing+apparelPDF 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 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_off000103cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE4 10896 bytes
SHA-256: 02608c3ab926aa23d8be608294d74956a8a8e2018bc0559ad274983e6eb39b1e
font_02_sfnt_off000134ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134ED 17784 bytes
SHA-256: 0537e6a0f802507c4cdae8224eb0d589a5e76fd6638b1e8c9281decacd8d50ec