Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c6ab68983d0347…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 15:19:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 68def9bb3ec741800f2d01693aa82477 SHA-1: 0b70507a6c3af267d6542a1c9ad10de17c20a143 SHA-256: f0c6ab68983d034713ac198c84a07b0d9196f4c5eae232092af74f82493a63b3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that lead to a malicious redirector, disguised as a game hack generator. The document body and heuristics indicate a lure for free in-game currency or cheats, a common phishing tactic. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious redirection workflow, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/using-cheat-engine-on-roblox-bloxburg-game-hack In PDF document text
    • https://goodtools.tw/upload/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/pet-trainer-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-get-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-hack-engine-for-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/cute-hacks-for-roblox-royal-hjigh_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-someone-home-in-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-roblox-bots-roblox-games_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://goodtools.tw/upload/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-hack-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/ways-to-get-robux-free_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/roblox-free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/how-to-retrieve-hacked-roblox_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • https://goodtools.tw/upload/files/pokemon-go-free-pokecoins_GM1094591345.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_off00002e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7D 21812 bytes
SHA-256: 9834d2e8e475fca112ff1eb132fc81e944e1e09a9a020f5d31c031edc34acb73
font_01_sfnt_off00005e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E95 19016 bytes
SHA-256: 9fcc44ac947c409c4216e90eb732ba32e0c02e879b73de0f69e4653e9ba320cf