Malicious PDF — malware analysis report

Static analysis result for SHA-256 370c0c8d1a906f09…

MALICIOUS

PDF

35.3 KB Created: 2021-06-19 13:55:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: edfa1ba5fff116f7725bb4e62f2dd12d SHA-1: 25c6b6c7256dc49b405f77226d7e4def1bd799a6 SHA-256: 370c0c8d1a906f098548e729260a16d197da0061939775a801571a6aa7b0f893
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a social engineering attempt to trick users into visiting potentially harmful sites. The document body, though partially corrupted, contains references to game hacks and currency, reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-workink-downloadable-roblox-avatars-game-hack In PDF document text
    • http://pustaka.bbppketindan.info//repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-800-robux-gamekit_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-g_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-golden-card-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-stuff-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-images_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/village-coin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-daily-spin-free_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
font_00_sfnt_off00003194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3194 22084 bytes
SHA-256: c05ec4dcdb04a3888a736852e836e4772ec6621eefb59469555b9970be0f37c4
font_01_sfnt_off00006291.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6291 19864 bytes
SHA-256: aca50c45470dea857a96759f4736abb0ebdb6523a0d3398725d77b636c66401a

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