Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80b6ffd86a10683…

MALICIOUS

PDF

24.8 KB Created: 2021-05-14 07:02:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3c80418933136235794fb73207da82a3 SHA-1: 579b1a4e663547d4397e7b9ebd47e220c3c77565 SHA-256: f80b6ffd86a10683525a9782b6a1ab9c65de6465494ce518780c7cbe2728e1ee
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hack generators and free currency sites. The primary link redirects to a known malicious infrastructure. The document body, though partially corrupted, contains text related to game hacks and includes a URL that is also present in the heuristics. The presence of multiple links and the nature of the lures suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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.
  • 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.
  • 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/479516143/free-minecraft-mods-for-pc-game-hack In PDF document text
    • http://fobh.net/userfiles/files/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-place_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/roblox-source_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-clothing-on-roblox_GM431946152.pdfIn 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
stream_003_off000046cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46CC 10380 bytes
SHA-256: c9a1461550b8a70ba8fab7465edce715e8c58aede0a29e2513ff9732f74a6d9a

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