Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d80fecb592ce46…

MALICIOUS

PDF

42.4 KB Created: 2021-05-14 23:01:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 76456b32f38426661c814e97687aad76 SHA-1: bbfbe3f4a70b0fa7ab1e3f391b3bbc8b28eeb2f6 SHA-256: 28d80fecb592ce46af34411c3f98c9940b7d162970950009945f412f1c1c09d7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to a malicious redirector disguised as a game hack generator. The document body and embedded links reinforce this lure, directing users to a URL associated with known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and malicious link suggest an attempt to drive users to a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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-get-free-robux-no-human-verification-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_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
stream_003_off00003393.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3393 29484 bytes
SHA-256: 0028a574146cc889bd40fcfc14cf96917921d2fea7b29315956fbcee5d443b93
font_01_sfnt_off000076b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B8 3500 bytes
SHA-256: e49a868379cd3c37e631c5a53c010e21f38d803532a2b8417aee82315d4e8634
font_02_sfnt_off0000825a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825A 19024 bytes
SHA-256: add4238412854312c544fb77f8d10d54d15c3f72dfb550af23f9090805c2c756

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