Malicious PDF — malware analysis report

Static analysis result for SHA-256 125b7a9525b72b75…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 23:42:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7ab7bb679ccf38074925b933e3513a95 SHA-1: 0e9910e383c866ef454a0857803025f380195ad2 SHA-256: 125b7a9525b72b755f84a12b793bb76d589630a19048c604ad605f55bdb33f74
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/406889139/coin-master-hack-twitter-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-hack-download-no-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/cheat-sheet-for-roblox-guess-that-song_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-hack-codes-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-como-tener-robux-gratis-2021-octubre-nuevo-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-20210-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-at-roblox-speed-race_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hacks-for-roblox-superhero-simulator_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-game-roblox-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-easy-on-android_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-download-roblox-cheats-hack-tool-v2-3_GM431946152.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_off000032a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A0 22584 bytes
SHA-256: 2b6352dee3ab492f442fd750b12f308b156ab79bcb59e0faf66a038941ede530
font_01_sfnt_off00006509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6509 18168 bytes
SHA-256: ddfa55fb21221439d64b6917fef2d932236e956379e28e7db94b80a6554a2b49

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