Malicious PDF — malware analysis report

Static analysis result for SHA-256 891482c334b3075f…

MALICIOUS

PDF

34.8 KB Created: 2021-05-23 06:13:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6ac048d2a35f97842ee041e06f92d130 SHA-1: 2d6c705e844395fa7e31ae6bf48b043351ee5847 SHA-256: 891482c334b3075f4a49f49797cbe5a8a0b240c2563066b1fa7d2d75db842326
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a lure impersonating Facebook, directing users to a malicious redirector URL. This suggests a credential phishing attempt, likely delivered as a spearphishing attachment. The embedded URL is a known malicious redirector, indicating the document's intent to lead the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/create-minecraft-server-free-game-hack.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/479516143/create-minecraft-server-free-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002e44.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E44 26828 bytes
SHA-256: df76a4d2dc450a914970a4e15f3b4972b359f6c68ced1d9be328fce3b212b466
font_01_sfnt_off00006902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6902 17684 bytes
SHA-256: 739dfd09c5bedc98bb46a6c5718dfc06afa6391c84dc1b066bb71172f329b46c

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