Malicious PDF — malware analysis report

Static analysis result for SHA-256 94405e3574c54d15…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 17:17:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f34d08cd564f7acf5083a8beb5dad802 SHA-1: acc08f4ff4243e90d9f98e418eff29595b2ffec5 SHA-256: 94405e3574c54d15d30aac4e641c9d731e1f71ea758db11f832ac9d58e6fa5c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically targeting users with lures related to game hacks and generators. The document body, though partially corrupted, contains references to 'Roblox 2021' and the primary malicious URL, reinforcing the lure. The presence of numerous similar URLs suggests a campaign distributing these malicious documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-2021-game-hack In PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/worst-client_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/roblox-free-hair-boy_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/free-robux-working_GM431946152.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://aviaprofsoyuz.info/images/how-to-hack-a-minecraft-server-and-make-yourself-op_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_003_off000048d5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D5 25496 bytes
SHA-256: 545c884e399dc699977d0a0d6af9ffdd6e5710aab811024de7e4190886d377b2
font_01_sfnt_off000082a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A1 18184 bytes
SHA-256: 6cca9372861d076cf8d3c2867e7e5d9b17d028f57adcd6414208106954a37e6b

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