Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2605404f889996e…

MALICIOUS

PDF

39.9 KB Created: 2021-05-18 04:38:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 13d02be5725586e6495923b608af0449 SHA-1: aa94fd6d57d8ce902741370db01baf0779cc2dfa SHA-256: d2605404f889996e61e75eff0e80ebe6bdf7fc1ff9549a1f67c592a7f2640240
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links pointing to a known malicious redirector infrastructure, disguised as a game hack generator. The document body also contains text and links related to this lure, indicating a phishing attempt to trick users into visiting a malicious URL. The primary heuristic firings confirm the malicious redirector and the lure used.

Machine Learning

  • Nyx PDF Classifier clean score 0.0131

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/406889139/free-spins-coin-master-generator-game-hack In 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_003_off000030f6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30F6 29036 bytes
SHA-256: 5e459d6eedd7464af1a1be6b2af871f956fdda8d48c7cb161019a1e7b288d62c
font_01_sfnt_off000071e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E7 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B99 17884 bytes
SHA-256: 4dbd7a0cfee3c9b81196055844221830545f0b5886b4093cfa91146119426c66

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