Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9c350300d458655…

MALICIOUS

PDF

36.3 KB Created: 2021-05-21 10:33:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5b0e5f31daad9e3feb3ef0f0a65dad48 SHA-1: d5354c416540d3e6986328c281cea5a62388443e SHA-256: d9c350300d45865540863b001443ab99b7e72c0e9246a87c5addca1a00609996
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and lures users with promises of game-related benefits. The document body and embedded URLs suggest a scam aimed at tricking users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure and heuristics indicate a malicious redirector workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/roblox-free-items-2021-game-hack In PDF document text
    • http://jaeger-bauplanung.de/images/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://jaeger-bauplanung.de/images/how-can-i-get-free-robux_GM431946152.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000316f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x316F 25564 bytes
SHA-256: 3c2c91b394172eb0d116f4a7b14e17c3823079f2ed783a554cc6be52ed488b61
font_01_sfnt_off00006b49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B49 18716 bytes
SHA-256: 1ac7dfea826aa1cf6bdd8a8871d75981f44760a1c5f47be9d1d913bfc788d2a8

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