Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c9696868260df6…

MALICIOUS

PDF

42.3 KB Created: 2021-05-16 13:29:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 60425ee8cf732045eb781074014cf8ca SHA-1: 78e78f3ef89ac80469b74b3d1389021400c248c4 SHA-256: c2c9696868260df6f988df433824c2d9fbe18af604058738718c51083bbb3595
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically advertising 'free game hacks' and 'robux generators'. The presence of these lures, combined with the ML classifier's high confidence, indicates a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure itself contains embedded links that are designed to lead the user to potentially harmful content.

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/431946152/10-robux-game-hack In PDF document text
    • http://truebibleteaching.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://truebibleteaching.com/images/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://truebibleteaching.com/images/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://truebibleteaching.com/images/free-shirt-templates-roblox_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_off000048a2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A2 25292 bytes
SHA-256: c6a4433f486f7334bedd39ac973b3b5d1519add4bd5b067548e593ef1c874ea9
font_01_sfnt_off00008385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8385 18128 bytes
SHA-256: fb53eb8f562c6c3a474b0aae8a68110d7a73c6f4157a43be3cf25a32a3453b93

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