Malicious PDF — malware analysis report

Static analysis result for SHA-256 88579ee676e1ab3e…

MALICIOUS

PDF

49.1 KB Created: 2021-05-12 08:02:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 269205069afd5a85d230b7a8910943b4 SHA-1: cca8891af7905e708250693a2cb72dea97fb40d1 SHA-256: 88579ee676e1ab3e7b8e1a96d5cd17b893af138fb266d304f861fcc402c99a9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, identified as malicious redirectors. The document body and embedded URLs suggest a lure for users seeking in-game advantages, likely leading to phishing or malware download sites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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.xyz/app/431946152/how-to-gift-robux-on-mobile-game-hack In PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/rbx-free_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.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_off00004b06.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B06 30976 bytes
SHA-256: f133769089cc32946fe9f95a67784925d9354f7e0e72300c774230eeba6a6bb6
font_01_sfnt_off0000907f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x907F 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00009d26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D26 18508 bytes
SHA-256: 4e4801ff192b8e14fd7533e10dce0a67112ed0a3683ce7dd9491cafead6d393b

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