Malicious PDF — malware analysis report

Static analysis result for SHA-256 1678158cda633657…

MALICIOUS

PDF

29.0 KB Created: 2021-05-10 19:30:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f72bc683423e885abd9099fce5982d50 SHA-1: f4530dbd203e3209f9ce4b0d7d6c4896e7004d89 SHA-256: 1678158cda633657a09c26d8be75f62ed90547ab5ae7bc1c2f9c0ae04028e9ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising free Robux and game hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9747

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/431946152/free-robux-obby-2021-game-hack In PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/free-hair-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/play-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.man5-bogor.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-2021_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
font_00_sfnt_off00002337.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2337 19916 bytes
SHA-256: e720dae4a322f2d7b3e6591202056c3eceefb4a39d2a5e9df490da12d5e6b63a
font_01_sfnt_off00004d6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D6B 18596 bytes
SHA-256: 4ee57ed15e8700d5e4346dbed35fcc2f6ba8dbed04d546ac38088c27601a53c6

Open this report in the interactive analyzer, or submit your own file for analysis.