Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c6b4e467dc6584…

MALICIOUS

PDF

41.8 KB Created: 2021-05-21 04:53:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 01e5570d0fcd7de17ae9e811211c96dd SHA-1: 557c552923f734cb6c40606d8f8285dbf7dca266 SHA-256: c9c6b4e467dc65842c0280acbb0aac0b3b54b400547eecb372b19d634b44eca8
160 Risk Score

Malware Insights

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

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The document body and embedded links suggest a lure for free in-game currency or items, a common tactic for phishing or malware distribution. While no scripts were directly extracted, the PDF structure and heuristic firings indicate it's designed to exploit users by directing them to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7527

Heuristics 4

  • 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.
  • 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/431946152/how-to-make-clothes-on-roblox-for-free-game-hack In PDF document text
    • http://uptodate.az/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://uptodate.az/images/coin-master-invite-friends-hack_GM406889139.pdfIn PDF document text
    • http://uptodate.az/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003312.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3312 28564 bytes
SHA-256: 9d880b7266bd97e2fe2c1f271d8375e9dc24668c3ac523f2d44d95efc74ba7dc
font_01_sfnt_off000074c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74C3 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00007fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FEC 18976 bytes
SHA-256: b61b86c25d6115ff697aefd9ab641b9f071fd28e07f949dfa38bf6f9b5f40050

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