Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a878f88317047a7…

MALICIOUS

PDF

34.8 KB Created: 2021-07-07 10:08:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ccd077f0999e532d4c8b62b45f043cb3 SHA-1: edb1c7e9682eed4b5e146a1698b701c64029f309 SHA-256: 3a878f88317047a7c18f9802cf3b39faf7fa28ed703a5a83bad2383a1af5c21b
82 Risk Score

Malware Insights

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

The PDF document contains a lure for a game hack, directing users to a suspicious URL. This suggests an attempt to trick users into downloading potentially malicious software or visiting a compromised site. The ML classifier strongly flagged this PDF as malicious, supporting the game hack lure as a pretext for malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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-version-apk-download-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-granny-hacks_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/300-roblox-accounts-free-v34m_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/infinite-jump-roblox-hack-free-download_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/tiktok-free-food-vending-machine_GM835599320.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/cheating-on-someone-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/best-free-alternatives-to-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hacking-roblox-reddit_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/snyapse-roblox-for-free-no-virus-still-working-2021_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
stream_002_off0000309f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x309F 22576 bytes
SHA-256: c3a8b4e1fc81b891509a972de8cc7f496054a0b6ec8a76aba9e80534270e9d37
font_01_sfnt_off0000632a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632A 18892 bytes
SHA-256: 8977d583bdd82d4967ea1f6ea8b3b66bdcfe6c0fbb9ee9f5666aad2009efb49d

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