Malicious PDF — malware analysis report

Static analysis result for SHA-256 69d141fd65e8f36e…

MALICIOUS

PDF

41.3 KB Created: 2021-05-10 11:39:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: facd0decdb699e853b6618c0b094e9af SHA-1: 09623e7a5748ebfb0b8df82066c16ec17bf472e8 SHA-256: 69d141fd65e8f36ef0edc0ba94fb617a5a213744b8ba61eec85414d17107e406
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link that redirects to a malicious URL, disguised as a 'free generator' for a popular game. This lure is intended to trick the user into clicking the link, likely leading to the download of a second-stage payload. The document body and heuristics confirm the malicious redirector and the lure tactic.

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/406889139/free-coins-on-coin-master-generator-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_off00003549.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3549 25168 bytes
SHA-256: 8f7618936496b8597d2f6bab3b7b4c5d9a29c83501b6da9694cfb5cb15bb8243
font_01_sfnt_off00006f97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F97 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_02_sfnt_off000081b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B0 17712 bytes
SHA-256: e8b1eba143f1d3c0478eece1d902ba9fd5ecbd562c4f2d9cad907c7e05d934a1

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