Malicious PDF — malware analysis report

Static analysis result for SHA-256 f22a80e0b830ee31…

MALICIOUS

PDF

38.4 KB Created: 2021-06-19 04:10:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: dc2bd24746a5a8ddacf0bfbc5e73d459 SHA-1: 250a4580cc16ba9f91ceaecdfdcb7a88dd6acca3 SHA-256: f22a80e0b830ee31962b42995a9a48beb458a1112f381b88f20bdd6a4273807b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to websites promoting game hacks and generators, such as 'how-to-get-free-robux-easy-2021-game-hack'. This lure is a common tactic for distributing malware or conducting phishing. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is part of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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/how-to-get-free-robux-easy-2021-game-hack In PDF document text
    • http://lib.teknik.unimal.ac.id//repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/lemonade-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-music-player-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/what-tiktok-free-views-hack_GM835599320.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/bruteforcing-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/free-roblox-builders-club-card_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-gear-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-coins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3BD8 22948 bytes
SHA-256: 092fbb4b9043b550a464ed0cbaac6ed0e4e95f5b5661552533d8b0c29f13778c
font_01_sfnt_off00006f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F93 19568 bytes
SHA-256: 6047aacc591c706ba05485d06cfe5ae263460dd3f24b02a1ffd0afe45eaea607

Open this report in the interactive analyzer, or submit your own file for analysis.