Malicious PDF — malware analysis report

Static analysis result for SHA-256 d882bf6837d071f4…

MALICIOUS

PDF

77.8 KB Created: 2021-09-21 11:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b3ff281a14cb63883de9d775d43b978a SHA-1: 0abe197f4765f631d0d5a6d693686f0d3ad67bb8 SHA-256: d882bf6837d071f4be25f136c8548222ee8bddae20f9395b6f54492ae55323dd
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, 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 heuristic firings suggest it's designed to redirect users to potentially harmful external sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://exosportsante.fr/ckfinder/userfiles/files/73407890216.pdf
    • http://motolargo.pl/userfiles/file/24100586172.pdf
    • http://landia-print.com/pdir/file/rowodunebexonumas.pdf
    • https://sukienmiennam.com/userupload/files/fifezametozaj.pdf
    • http://associazionemillesogni.it/userfiles/files/45253747935.pdf
    • http://provia-events.de/pics/fotos/1/file/68993225464.pdf
    • https://lanhcongnghiepthinhphat.com/upload/files/42226701275.pdf
    • https://livredart.com/ckfinder/userfiles/files/vemadejuborobexadojeze.pdf
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613438e8508a1---50478500324.pdf
    • https://coebmsf.com/userfiles/file/vodugofake.pdf
    • https://binarbaidrealestate.com/public_html/userfiles/file/70906397126.pdf
    • http://artechq8.com/beta/uploads/files/2528034462.pdf
    • http://jenan.com/ckfinder/userfiles/files/tuporodisogilurutum.pdf
    • http://seattlebestteriyaki.com/uploads/files/90428111686.pdf
    • https://umutfm.com/resimler/files/85472168614.pdf
    • http://dpnovelty.com/upload/files/48399834330.pdf
    • http://yildizteknikelektrik.net/resimler/files/towedexijikaxala.pdf
    • http://savitapiti.org/ckfinder/userfiles/files/46985689704.pdf
    • http://karthikeyanjayaram.com/userfiles/file/lipofej.pdf
    • http://haiannweb.com/uploads/files/kowozuwosonunadexiwido.pdf
    • https://langumeistras.lt/i/File/bixuritofujuf.pdf
    • https://sanvexe.vn/webroot/img/files/13429552823.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=adopt+me+pets+mod+apk
    • 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_off0000c9fa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FA 16792 bytes
font_01_sfnt_off0000e20c.bin
51777c020c63a2ff95be5d157f912b84bf7fc92c5ac42c3fa83453253c4e2262		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE20C 18756 bytes
font_02_sfnt_off000112fd.bin
0ca576794697e73636943ea448f8b4563ae4e1d6887217b450e8a21cdc2a55f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x112FD 10284 bytes

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