Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8ec0a469c7eb0a0…

MALICIOUS

PDF

73.1 KB Created: 2021-09-27 02:30:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f489923b8e1130bd1b05b0d0e9befdac SHA-1: 45dc187f816404b29c58c224dec96f6ce26d2d50 SHA-256: d8ec0a469c7eb0a036c12c2c63a7d0efe68f30b1039e05badb0a9f157271d793
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 http://bindashnews.com/userfiles/file/58743162704.pdf
    • http://omeofest.eu/userfiles/files/nawowofe.pdf
    • https://nocenzura.space/web/img/podborky/files/12661142590.pdf
    • https://thic.net/plugin/ce1/ckfinder/userfiles/files/65282551400.pdf
    • http://rana-international.com/userfiles/files/52236133667.pdf
    • http://labsshop.com/d/files/soniwugikibunusagawuko.pdf
    • http://gamax-motor.cz/data/dokumenty/menigaxuvobagiwatekufe.pdf
    • http://janaturismointegrato.com/uploads/file/sonatogidodopemolugujetum.pdf
    • https://edgecs.com/documents/vutibepozovirolisipegapam.pdf
    • http://officegate.biz/admin/fck_upload/file/polegosubajogibixezipifaz.pdf
    • http://quaretti.it/userfiles/files/80816132483.pdf
    • http://impactpluslearning.com/ckfinder/userfiles/files/dukimajuw.pdf
    • http://www.pattyn360.com/upload/forum/files/somajewu.pdf
    • http://jarauwerdaenzn.nl/userfiles/file/66488492577.pdf
    • http://jilienjrubin.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/65501202340.pdf
    • http://fgosvo.ru/files/files/wosifokoladuge.pdf
    • https://revive.fashion/upload/files/27430860509.pdf
    • https://olivierdaulte.com/ckfinder/userfiles/files/nekojutokisozaroxepise.pdf
    • http://issaproject.com/app/views/panel/ckfinder/userfiles/files/perovomesezomaxeredir.pdf
    • http://cgpreceptor.com/ckfinder/userfiles/files/moguwebizajusatodumi.pdf
    • http://growlink.biz/userfiles/file/tafiwulepelotaguki.pdf
    • http://kojeneckezbozi.eu/userfiles/file/83158075329.pdf
    • http://www.iamgoingto1996.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614617031c833---82577068870.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=vsco+premium+apk+2021
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b75f.bin
d0b492e907f031984eca5de70c7d7ea32e44dbf1225848d8e801f19a7d801d4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB75F 18228 bytes
font_01_sfnt_off0000e61a.bin
31fe4d6c4508d0aa6b3882947d4a943cbc0386b24bdb30b2969af9ca10f5cead		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE61A 10740 bytes
font_02_sfnt_off0000fef0.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEF0 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.