Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab103cf04dabcaa…

MALICIOUS

PDF

37.4 KB Created: 2021-05-21 17:16:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0509abcf7d8008628fb5545fb3a31acf SHA-1: 5b852311578c9d6090186d3efec2bc7a29f54856 SHA-256: eab103cf04dabcaaa6ff148f7ffd7ec0c00f7cb30730fd9d9b2933e596273bc9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, masquerading as free game hacks and generators. The document body and heuristics indicate a lure for users to click these links, which likely leads to the download or execution of further malicious content. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a malicious redirection workflow.

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/479516143/minecraft-xbox-one-edition-digital-code-free-game-hack In PDF document text
    • https://www.manmed.info:443/images/roblox-hacked-com-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-exploit-download_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_002_off0000358b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x358B 25220 bytes
SHA-256: 5c078b31868cfe74f8907e4b98154d89034e248ebaaff90dddadefded4ae3b8b
font_01_sfnt_off00006e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E97 19008 bytes
SHA-256: fdc182bbb0097015eb5c04957e9722c28c9e7580ee65fff8630002b28e8f7f3d

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