Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ced6181a33517ff…

MALICIOUS

PDF

38.2 KB Created: 2021-05-23 05:48:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 7a1a9adc4c6346b761da0e772628a12c SHA-1: dcfacd9c1809fbb7fe56e36bf2124c2ea189a214 SHA-256: 9ced6181a33517ff95deb96098d057850e8049553fbe7c5f74152205bda62688
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, masquerading as game hacks and generators. The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-free-gifts-game-hack, which is associated with a critical heuristic firing for malicious redirector infrastructure. The document body and embedded links suggest a social engineering tactic to trick users into visiting these malicious sites, likely leading to further malware downloads or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/coin-master-free-gifts-game-hack In PDF document text
    • http://feuerwehr-rheinau.de/images/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://feuerwehr-rheinau.de/images/minecraft-pe-hacks-2021_GM479516143.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_off0000356b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x356B 29540 bytes
SHA-256: 1f54ceeb03c90800baec5589ba01e70b531a550a0794f71575d666a11ca37d8e
font_01_sfnt_off000075f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F8 17712 bytes
SHA-256: 401d56b29285354d6954c3c26e793cbeb56329cdc5209d9139ec018457d4ba23

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