Malicious PDF — malware analysis report

Static analysis result for SHA-256 b96ab8aebb30060a…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 16:16:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: baebf351f8c360c351df33025b108c01 SHA-1: 29bab88981968cc8a92c95601769505db7045dc1 SHA-256: b96ab8aebb30060ac055cd3afd8f05757e2988c6bb4bf4d5c83d5b0a6389bb68
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed as a lure, employing game hack and free currency themes to trick users into clicking malicious links. It contains multiple embedded URLs, including a known malicious redirector and several pointing to an IP address, which likely serve as further stages of a phishing or malware distribution campaign. The presence of a download button lure reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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 http://netcdn.co/app/431946152/a-file-with-hacked-games-roblox-game-hack In PDF document text
    • http://202.56.165.220/digilab/repository/free-coins-and-spins-2021_GM406889139.pdfPDF link annotation
    • http://202.56.165.220/digilab/repository/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-hair-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-script-executor-roblox-2021_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/fan-free-games-roblox_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/play-full-version-of-minecraft-for-free-no-download_GM479516143.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/vouchers-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-roblox-durag_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-exploit-razzberry-and-tools-hack_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-free-stuff-from-the-catalog-on-roblox_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-hack-assassin-roblox-2021_GM431946152.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_off00002f79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F79 22344 bytes
SHA-256: 41edc071a68a4bd6516ea83bc457016340bd16de9708e2724112abff6538df75
font_01_sfnt_off00006152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6152 19840 bytes
SHA-256: 00ec6a7d8a5dfac516aa3a15d62e1ee8c6b507105bd00c785fe9a0eeeb2aa8f2

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