Malicious PDF — malware analysis report

Static analysis result for SHA-256 dff73a2cbf97bacb…

MALICIOUS

PDF

33.3 KB Created: 2021-06-27 11:23:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ba24cfe0a93d7d243ff20284458a6845 SHA-1: b704e1dd9b7ae13291b532c2bd34cf109b9434ca SHA-256: dff73a2cbf97bacb52cbf44716895fcc6796dcdd288ab7f7829b3d103a383442
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs that lead to known malicious redirectors, disguised as "free generator / game hack" lures. The document body explicitly mentions "How To Get Free Robux On Ipad Easy" and includes numerous links to similar scam pages. This indicates a phishing or scam campaign designed to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-on-ipad-easy-game-hack In PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-free-inlimited_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/video-hacker-roblox-francais_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-without-downloading-an-app_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-in-roblox-without-hacking_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-in-roblox-inspect_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/youtube-free-robux-november-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-new-organized-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/carte-cadeau-roblox-robux-hack_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_off00002ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AE0 22200 bytes
SHA-256: a5bcd7954db7a2b8ad86d0cac6beb4a835af928bab795b93a28d2b4bf0e4240a
font_01_sfnt_off00005bf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF3 19512 bytes
SHA-256: 5c9abd893a8bb437d6b46644e710c06b1e32f6d3179906018441828327a6a602

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