Malicious PDF — malware analysis report

Static analysis result for SHA-256 6164abe76954310f…

MALICIOUS

PDF

37.8 KB Created: 2021-05-20 22:59:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b0d6165bc5083f075e121be3ceb7b02d SHA-1: e129cb39f10b97509538e6c22f07eb93bcdf2f3d SHA-256: 6164abe76954310f1d3c89adb5cc7af7ec38adbd3f39df8126c8b1bfe8ac8bd2
160 Risk Score

Malware Insights

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

The PDF document contains multiple links, including one identified as a malicious redirector for a 'game hack'. The document body also contains phrases like 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a lure to trick users into clicking the malicious link. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/431946152/kuso-icu-roblox-hack-game-hack In PDF document text
    • http://cleansui.com.tw/image/data/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-monster_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-hacks-for-coin-master_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_002_off00003650.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3650 26164 bytes
SHA-256: 44377fce15496f747a747d7ba5108269d00e58ea27aec8b6081d9c1f814b365d
font_01_sfnt_off0000723b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723B 18320 bytes
SHA-256: 67b96beca271d5ff8db6d4205f4bcb305d403275eb03eb731bd8bb208d3be0d2

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