Malicious PDF — malware analysis report

Static analysis result for SHA-256 311895b651893c45…

MALICIOUS

PDF

26.3 KB Created: 2021-06-17 23:03:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 8ac1a252c85c1b55259ae26161c18a34 SHA-1: ed423bce43990809960cad72674a341330c6d595 SHA-256: 311895b651893c456dcc5b6953075b450f803c00d4c16f3011899ad2e19c1754
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free game hacks or currency. These links redirect to malicious infrastructure, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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/hot-to-hack-roblox-on-mac-game-hack In PDF document text
    • http://www.sapaengineering.kz/images/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux-ocobef-2021_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/what-items-are-free-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/moon-active-games_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-free-avatar-animations-roblox_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/roblox-generator_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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E89 21004 bytes
SHA-256: b4b39a6449bd23697b98f3ded07b9835f1b7b1ebaf93e05287d35c3dd9d588c6

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