Malicious PDF — malware analysis report

Static analysis result for SHA-256 a429b106cd52b37a…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 22:56:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3a7d185f6374c89d334618b9d3386901 SHA-1: 26050ec7602c346295f947db400b37d25833334a SHA-256: a429b106cd52b37a380347bd68e23c710ee30849513605ece66599ef6dce773d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that lead to known malicious redirectors, often disguised as game hacks or generators. The document body and heuristics indicate a lure to download or access potentially malicious content, likely leading to further malware or credential theft. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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/roblox-script-greenwood-town-free-vampire-game-hack In PDF document text
    • https://fib.ub.ac.id/sac//repository/bad-minecraft-free_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-assasin-hack-script-2021-unpacthed_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-with-script-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/omo-recuperar-una-uenga-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/roblox-waterpark-noodle-for-free_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/comment-hacker-robux_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hack-dragon-ball-rage-roblox-android_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/impact-hack-roblox-help_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://fib.ub.ac.id/sac/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • https://fib.ub.ac.id/sac//repository/robux-generators-that-actually-work_GM431946152.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_off00002ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF5 22248 bytes
SHA-256: 06940a826c973d504a653e088431cc4f7fb937995c4d89dce5610ad8286dfdbc
font_01_sfnt_off0000617d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617D 19780 bytes
SHA-256: efdb857be512cb4ebcc10ca02168e58922169c62c7ecf7bc168c7f1a45dda1ab

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