Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c6bc07577186986…

MALICIOUS

PDF

36.3 KB Created: 2021-06-27 21:33:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d8af713d5a8e837bc5326344f93ac49d SHA-1: 7247c66ddba641d243637a5f39c7e9b91c5982d0 SHA-256: 7c6bc0757718698695492ea6439c1cf5708bc459f0321e852342d63ac877cf8d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as a 'free generator' or 'game hack' for popular games like Roblox. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users into clicking malicious links. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, 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/how-to-get-free-robux-2021-fast-and-easy-game-hack In PDF document text
    • https://i-tech.ac.id/perpus/repository/hack-sharkbite-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/code-hack-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/lumber-tycoon-2-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/comment-hacker-roblox-macbook-pro-franais_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/download-lag-free-version-of-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-free-admin-gear-codes_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-semi-transparent-pants-free_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-hack-robux-and-tix_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/hackear-prison-life-roblox-2021-pc-dansploit_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-equip-knife-roblox-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-free-gamepasses-on-roblox-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/wwwrobloxcheat-de_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-abilities-for-twisted-murderer-on-roblox-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-speed-hack-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A5 23192 bytes
SHA-256: 3176eafebde6c00c4290be89147f99d4f22ab76c8b0c221d37bd71a1e3df4f5f
font_01_sfnt_off000066ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CA 19740 bytes
SHA-256: 7f2bbee0721e03c4b0e01aecd6662613ad1937bf740c3204a553fb0a62602f33

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