Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f4663c7bbf0d46…

MALICIOUS

PDF

33.1 KB Created: 2021-06-19 03:38:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: af82a9b2850c51016c5ed9f66de8c61c SHA-1: ae1b6239b1482898d3f66eed1120541b746c90a8 SHA-256: c6f4663c7bbf0d46174975cd518928e1eae1db2fd433008e24f59e05417b3f23
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and generators. The primary lure appears to be related to Roblox cheats, directing users to a URL hosted on netcdn.co. The document body, though partially garbled, contains similar URLs and references to game cheats, reinforcing the phishing pretext. No scripts were extracted, but the PDF's structure and embedded links are indicative of a phishing campaign designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 3

  • 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.
  • 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 http://netcdn.co/app/431946152/roblox-cheat-speed-run-4-game-hack In PDF document text
    • http://gomelavto.by/images/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-hack-roblox-no-survey_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/pubg-2021-uc-redeem-code_GM1330123889.pdfIn PDF document text
    • http://gomelavto.by/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-ip-tracker-hack_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002edd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDD 22476 bytes
SHA-256: 56b1d1cafe59251e7467133aa973535e97136a9c0f6eb3f7e23f1f7fe0a5fff6
font_01_sfnt_off000060f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F8 19124 bytes
SHA-256: a6f9220584fd7d34861067f68e511be6a9666a3d72313b94b8deb0ae2187e2c9

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