Malicious PDF — malware analysis report

Static analysis result for SHA-256 06a74a30a8e22630…

MALICIOUS

PDF

44.2 KB Created: 2021-05-12 08:46:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e7139acb5cc3ed611821466743b4a224 SHA-1: 397362584634c1fa41f1ca5d7dcdd40182fa3f8c SHA-256: 06a74a30a8e226301fb371ab414ea992f2fad2931175e8551830cfeb1dfa0a73
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generator' or 'game hack' lures. The presence of a fake CAPTCHA heuristic indicates the document attempts to trick the user into interacting with these links. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/free-robux-videos-game-hack In PDF document text
    • http://repository.poliven.ac.id/repository/robux-offers_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/cone-master_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/coin-master-35-16-hack-apk_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-free-spins-link-2021-app_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/free-generator_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id//repository/roblox-executor-free_GM431946152.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://repository.poliven.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.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
stream_003_off00004a35.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A35 28304 bytes
SHA-256: 8cfb5bd2a6ffcbde0338e2e66717a8ccca017405640b4ed12a5b59d2d3d30c59
font_01_sfnt_off00008a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A3E 18444 bytes
SHA-256: 1ec21ed17295e3d49cd7a507c4ef3ee968e538ae560c82d8bcc555326bed268a

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