Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a4eb72080751a70…

MALICIOUS

PDF

35.9 KB Created: 2021-05-14 08:01:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b56265061e9b54285308b04cef8019e5 SHA-1: 7b0aaa7005caf873126965f75ae5707de7fc9908 SHA-256: 7a4eb72080751a707675262fb2dec9d7a2506456e136a144812cbab66ac33e92
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users to external websites, many of which are associated with game hacks and cheats. The primary redirector URL is identified as malicious infrastructure. The document body and embedded links suggest a social engineering tactic to drive traffic to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/406889139/coin-master-daily-free-spins-link-blogspot-game-hack In PDF document text
    • http://gomelavto.by/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048fb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48FB 24880 bytes
SHA-256: 400a66b75590f34d9abc24a6a685ca67256fa1fa6b0a25bb4fb67960a4408795

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