Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb6f864696ba6a1c…

MALICIOUS

PDF

35.4 KB Created: 2021-06-30 21:36:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0a3a63d8c302aefb8298273757e6405d SHA-1: 9792f6e634fb75e8337863d6715e6529991c4f60 SHA-256: cb6f864696ba6a1c06f4d436b863029a9128a3b1947ecf5e09ee3801f394700c
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are identified as malicious redirectors or part of a link farm designed for SEO manipulation. The document body and heuristics indicate a lure for game hacks and free currency, likely leading users to scam sites or potentially exploit kits. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.co/app/431946152/bloxburg-on-roblox-free-play-game-hack In PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/da-hood-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-hack-code_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-for-xbox-for-kids_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-super-checkpoint-cheats_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-mm2-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-win_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/earn-robux-for-free-no-offers-or-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-purple-shirt-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-skywars-free-mega-vip_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-booga-booga-fly-hack-may-26-2021-mojo_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/one-piece-millenium-roblox-hack-stats_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-pointsprizescom_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
font_00_sfnt_off00003258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3258 22752 bytes
SHA-256: 68f0f4f960a7c52679c80e76b3418462c26491185e142e96ee64ff5a6247b279
font_01_sfnt_off00006534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6534 19124 bytes
SHA-256: d503b6d0086e1a4579da6e085258c0fb5d28db78feec924b0929f0b3bb806939

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