Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed642bb9c97f140…

MALICIOUS

PDF

85.2 KB Created: 2021-09-20 06:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 6fe741698da67b1d6d6c7ad14d354d73 SHA-1: b901ececab7acd23c8289a4813bdde62b4cd1e70 SHA-256: 9ed642bb9c97f140f19cc421cea6d71f5d4b0db768fb4cf98cbd564fe2bd6703
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users. While no scripts were explicitly extracted, the presence of a link farm and the detection of a phishing trojan strongly indicate a malicious intent, likely to lure users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • 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://www.burnat-provins.ch/ck/ckfinder/userfiles/files/55646540782.pdf In PDF document text
    • https://digbijoynath.in/uploads/userfiles/files/vowikojuvatudaziv.pdfIn PDF document text
    • https://aiaciran.org/cache/fck_files/file/simufipijulisuvowedujagif.pdfIn PDF document text
    • http://1yunnan.com/ckfinder/userfiles/files/rogat.pdfIn PDF document text
    • https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614298ac6077e---mabebinumobibaxunud.pdfIn PDF document text
    • https://www.blondel-bois.fr/ckfinder/userfiles/files/52382211027.pdfIn PDF document text
    • http://associatedreclaimed.reclaimedoils.com/userfiles/files/69728066713.pdfIn PDF document text
    • https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files/menerumewepizezukiza.pdfIn PDF document text
    • http://willbramephotography.com/97890963587.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/4cf0c11c5eae3f4725e68b25d1ed8a6b/redamururobozufu.pdfIn PDF document text
    • https://www.ccs-corporation.com/ckfinder/userfiles/files/xosusudevesenoxedaw.pdfIn PDF document text
    • http://marikitaberbagi.com/userfiles/file/4085007361.pdfIn PDF document text
    • http://chongqinghaohong.com/upload/files/vodijowimekal.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/43764080f824bd7f98b1c4714d332650/79697464483.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/3bd06cfd9f99a1c4cc36bdbf6ada644a/21799671806.pdfIn PDF document text
    • https://grouptm2.com/contents/files/43780999464.pdfIn PDF document text
    • http://taeguektour.com/FileData/ckfinder/files/20210910_7426B353085A0CCA.pdfIn PDF document text
    • http://hpworld.hu/data/pic/Image/file/xarisawolusekawikexo.pdfIn PDF document text
    • http://panziofabian.hu/fck_kepek/90525772463.pdfIn PDF document text
    • http://studioturina.com/userfiles/files/xemodomabapizafixejusa.pdfIn PDF document text
    • http://addisonplaza.abwingsmd.com/uploads/files/93538271970.pdfIn PDF document text
    • http://e-cluny.cz/UserFiles/file/lepejeniwonenipikagesiso.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=watch+videos+android+autoPDF 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_off0000ea65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA65 17424 bytes
SHA-256: 2aa3281111d6fb974eea619c731fcb9dd286a43e5b30d53dd2d582cd585adedd
font_01_sfnt_off00011797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11797 10580 bytes
SHA-256: d3f1830bddbee64cbb232caa537977c8cc894eb729a9d316f491e842006f7a77
font_02_sfnt_off00012fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FCC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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