Malicious PDF — malware analysis report

Static analysis result for SHA-256 43e3fc124e1d6f34…

MALICIOUS

PDF

36.5 KB Created: 2021-06-26 12:14:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 19bb8c8afab0e81a1ddf8ce7fa38c312 SHA-1: c84e31d2c3a722c966f2b7d982ad0b54432e240a SHA-256: 43e3fc124e1d6f3447977054fcffb7ca02218037fbcc9a390cac9cab2040f75b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to entice users to click on embedded links. These links lead to a malicious redirector and other PDF files hosted on potentially compromised domains. The document body and heuristics indicate a social engineering tactic to drive users to malicious infrastructure, likely for further exploitation or malware delivery.

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/free-robux-generator-straight-robux-no-human-verification-game-hack In PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/haow-to-hack-robux-no-bc_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/top-10-roblox-hacks-rolbox-fandom_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-outfits_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-free-robux-exploit_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/como-hackear-roblox-com-cheat-engine_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-a-free-bighead-in-roblox_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_off0000350e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x350E 23016 bytes
SHA-256: 200e59d94ab866bcf2f802a2de4ed8432983ee8653a5405e5b3a5afc98475747
font_01_sfnt_off0000688f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688F 19500 bytes
SHA-256: aaf9f85371973cf84d92699cd8728580cf3216a6d100b73c8011b923c65cb356

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