Malicious PDF — malware analysis report

Static analysis result for SHA-256 b01ff6066fd38151…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 12:34:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 8e256bd994fb3d49774c51c373915944 SHA-1: 3201f4a9ebf7c4f2ab028ac9f9641692eb669f4d SHA-256: b01ff6066fd381516f63e61d78bcf19e180eca36fe8da406d0ebe7ad73878b91
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, employing tactics to trick users into clicking links related to game hacks and free currency. It contains a mass of external links, many pointing to SEO-optimized PDF files, and a primary link to a known malicious redirector. The document's structure and content strongly suggest it is part of a phishing or scam campaign, likely intended to lead users to further malicious sites or downloads.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.tw/app/431946152/how-to-make-a-roblox-group-for-free-game-hack In PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-shirt-in-game_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/hack-roblox-telechargement_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-auto-human-verification_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/copyright-free-roblox-template-shirts_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-roblox-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-rc7-hack-scripts_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-roblox-game-card-codes_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-bugatti-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-hack-a-roblox-account-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_off00002ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAD 21352 bytes
SHA-256: 3ec11fd3e965fc5892eb3ed190345e5a0c356b343a6c3806dd02597fab4c38ce
font_01_sfnt_off00005d4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4F 19496 bytes
SHA-256: 14cafe897e1a2f278398660849a051e886c01303fa535fd92545c6b58a09d23d

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