Malicious PDF — malware analysis report

Static analysis result for SHA-256 75b555c3a5225767…

MALICIOUS

PDF

40.9 KB Created: 2021-05-15 08:02:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1fc7669f1edfd5d18e77a5363c56b9e6 SHA-1: d5b99161ca693194ad60cef3bdd29efb3ef44220 SHA-256: 75b555c3a5225767c05ad728cc6524559ac014d70d9e280033fbf60eba27bd15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting a 'Roblox Hack Me' lure. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple links to known malicious redirectors and game hack lures indicates a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded URLs suggest it is designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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-hack-me-game-hack In PDF document text
    • http://felmerihomes.com.au/images/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://felmerihomes.com.au/images/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://felmerihomes.com.au/images/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://felmerihomes.com.au/images/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://felmerihomes.com.au/images/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://felmerihomes.com.au/images/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://felmerihomes.com.au/images/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://felmerihomes.com.au/images/free-account-roblox-with-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_003_off00003c54.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3C54 29188 bytes
SHA-256: 5f9fcfcff10ea5b079f9ad6041a9bcf9187cc713e0e4df95a38c8d51ab303bf6
font_01_sfnt_off00007dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD3 18376 bytes
SHA-256: aef395c884b1121fa113f915db4056a7b0027cd471dc4d96a5cdd03c50f60cf3

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