Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada10b66c80fca13…

MALICIOUS

PDF

42.8 KB Created: 2021-05-11 13:15:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 270b6ea34333546f35812349b5341209 SHA-1: 2af22d28ad986475b36fb4d5be04b3c99f3b24d5 SHA-256: ada10b66c80fca1348070922b96da0244a6c6e79dbdc1c2f26c79913875010ce
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one that redirects to malicious infrastructure. The document body and embedded links suggest a lure for game-related cheats or hacks, likely to trick users into downloading further malware or visiting phishing sites. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the heuristic firings indicate malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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-hack-tool-for-pc-game-hack In PDF document text
    • http://gomelavto.by/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/ww-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-generator_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45AC 24072 bytes
SHA-256: ad802da3d9aef2629cd01d2ff39d11d08c22a4f19cc6dec6cbfcbea48efa84a9
font_01_sfnt_off00007cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB4 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8666 18108 bytes
SHA-256: 41676337f8d66d7dfaadfd94b2675436d9ece3084dad9ad1b3cc1116d791989a

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