Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1980c301985ccb…

MALICIOUS

PDF

41.8 KB Created: 2021-05-19 09:39:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c205ec8142b39d7aa7d3f828f2fbd0be SHA-1: 2530936335d01148a553bbf683ca5cefe5b98438 SHA-256: ba1980c301985ccb70e66f018469839031fe555b29a66cddb471c4b3ceefa8c8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and websites offering "game hacks" or "free generators," indicating a social engineering lure. The document body, though partially corrupted, contains references to these lures and embedded URLs. The presence of multiple malicious redirector links strongly suggests an attempt to lead the user to potentially harmful content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-hack-android-2021-game-hack In PDF document text
    • http://classicskitours.net/images/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://classicskitours.net/images/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://classicskitours.net/images/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://classicskitours.net/images/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • http://classicskitours.net/images/coin-master-fun-hack_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
stream_003_off0000480f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x480F 25088 bytes
SHA-256: 1b9d39024794f54d09fe836e0fb63324eae31bdfa84b96af6889b22283e758b1
font_01_sfnt_off000080af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AF 18292 bytes
SHA-256: 2eef875b4bf5d22316b1cf45c42803dae8a296212e229986f5bc4c17bc069cb6