Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d4d119f7aa82ea8…

MALICIOUS

PDF

84.5 KB Created: 2021-09-16 06:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e914a6ce40ff5d23ec6c9b4cb29364ab SHA-1: 06521c92c716e2f63b8f7dd5625f3bacff7b0696 SHA-256: 0d4d119f7aa82ea86c0c7ccf12a541f58c445c331e92b9d2601307d51084c61d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious content. It contains numerous external URIs pointing to disposable hosting, suggesting a link farm designed to redirect users to potentially harmful sites. The presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • 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 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://inwebjor.ru/uplcv?utm_term=brock+microbiology+pdf PDF link annotation
    • https://almavilag.hu/files/files/80448724627.pdfIn PDF document text
    • http://tianfonmm.com/d/files/56006776834.pdfIn PDF document text
    • http://americasbestmanassas.com/uploads/files/36018492512.pdfIn PDF document text
    • https://aljuboori.com/userfiles/files/44058506598.pdfIn PDF document text
    • http://onthebroadway.com/CPD/adminpanel/upload/file/76239464281.pdfIn PDF document text
    • http://thienminhgroup.com/uploads/userfiles/file/rilik.pdfIn PDF document text
    • http://sampoernastrategic.com/uploads/image/files/mimupuravagubarejab.pdfIn PDF document text
    • http://qapoll.com/2015/vat/upload/files/gamaziwo.pdfIn PDF document text
    • https://er-cardiff.com/eurostyl/photos/file/38709820075.pdfIn PDF document text
    • http://tencanpowder.com/d/files/vajepesubarizil.pdfIn PDF document text
    • http://hyunshin.net/userfiles/file/woxusi.pdfIn PDF document text
    • http://joelcsimonesq.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/33379367621.pdfIn PDF document text
    • http://goraku-sangyo.com/userfiles/file/xufomulup.pdfIn PDF document text
    • https://exam10.menapoint.com/app/webroot/upload/files/43514885204.pdfIn PDF document text
    • http://www.santamyoga.be/images/file/17439146069.pdfIn PDF document text
    • http://havefuntogether.com/image/upload/File/nunorexumawevotok.pdfIn PDF document text
    • http://illinoislivestock.org/userfiles/file/fubejevusikaka.pdfIn PDF document text
    • http://lungshingcentre.com/userfiles/sepawimiwoferij.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613864b2745f5---tigipixonekoti.pdfIn PDF document text
    • http://archiprojektai.lt/app/webroot/uploads/userfiles/files/76285806006.pdfIn PDF document text
    • http://timebymtm.com/upload/files/45180907896.pdfIn PDF document text
    • http://artepcb.com/upload/files/guwodujitemulurukuviti.pdfIn PDF document text
    • https://www.studiorosaliabusco.it/ckfinder/userfiles/files/92629342097.pdfIn PDF document text
    • http://stylekd.ru/files/97588050787.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e48a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48A 10700 bytes
SHA-256: 7fb1f0e5156b7f2544792c74fcdb8910fd7ac9714207cf8361004e0780734a6f
font_01_sfnt_off0000fca1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCA1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000114b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B3 18392 bytes
SHA-256: b28069f136fef33b1766f9700b3935d5cd14c16e5dbd51c4c13b0c99d0397686

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