Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d70434ebc524511…

MALICIOUS

PDF

45.4 KB Created: 2021-06-03 06:23:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: de1372ee5e3d7b87404d914ef5446b05 SHA-1: 951076f2d4bfd3c1f36ea96d2b722264b3609def SHA-256: 6d70434ebc52451140c76cbfa04bba9b33b702ca6f08a7129ea430511188cc62
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains links to a known malicious redirector infrastructure, masquerading as a generator for game hacks and mods. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.
  • 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 https://netcdn.online/app/479516143/free-mods-for-minecraft-pe-game-hack In PDF document text
    • http://library.yamasi.ac.id//repository/robux-claimer_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-coin-master-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/get-free-cards-coin-master_GM406889139.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
stream_004_off00005666.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5666 25076 bytes
SHA-256: 8446ac547ca73a5594b7316ca310ccda059dfd4c27bd4834864ad8a52248d451
font_01_sfnt_off00008fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB3 18040 bytes
SHA-256: 55677d50e7f19372d6dfb723d72c398dee248f925afb4425ab44c3bb4ecd28f4

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