Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde597ae3012a9ef…

MALICIOUS

PDF

37.2 KB Created: 2021-07-02 03:03:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9b924c73176871fc2b3f75d8f010b4c7 SHA-1: aae7c6f98f5b4be44e5fdc041528570bfeec917e SHA-256: fde597ae3012a9ef17627d074e897656f9a8898cd06ba92c455bc796fbe1bd05
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users with promises of free Robux and game hacks. The document body explicitly mentions bypassing human verification and links to a URL associated with this lure. The ML classifier also strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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-bypass-human-verification-on-free-robux-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-northern-frontier-how-to-hack-pounds_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-robux-no-hack-or-scam_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/are-roblox-hacks-real_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/velvet-twitter-feel-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/10-easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-games-on-ios_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hack-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/pokemon-go-free-items_GM1094591345.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-its-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-cheat-no-key-required_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/maxim-games-free-robux_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_off000034bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34BC 23532 bytes
SHA-256: bc190096035ff2b969a77a6b1cca3d1d28e52cf22cfc6f0e454f3e1a7fd387e1
font_01_sfnt_off00006a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A48 19852 bytes
SHA-256: 4add9566193d949aa94204b16af49e5edfad7e2f41ed3a13fc5465faf7962945

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