Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf62418cfcab9bd2…

MALICIOUS

PDF

35.4 KB Created: 2021-07-03 16:10:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c7d75de45fb3f5747dd61e5973c9353c SHA-1: a9d903568ca51f0917d35328bafdbabea752c1ac SHA-256: bf62418cfcab9bd290c3e98b6f96d499ac269287ceb2e0e01de8d7faf2299d9c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and sites offering game hacks and free currency, indicating a lure for users to click through to potentially malicious content. The heuristic firings confirm the presence of malicious redirector links and a general lure for game-related exploits. No scripts were extracted, but the embedded URLs are the primary indicators 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.tw/app/431946152/roblox-free-robux-no-human-verification-game-hack In PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-give-btools-with-cheat-enigene_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/mc-update_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/how-to-get-admin-commands-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/roblox-platesoffatemayhem-hack_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/code-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_off00003207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3207 22596 bytes
SHA-256: cbd838037fc655faf5d5cf1d0a2b5332e417995d126b46bbe97ed7cec2d5fbc5
font_01_sfnt_off0000649e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 19408 bytes
SHA-256: d2ef309b92771ae7bb099a6b634574daefb8445dd777fce633f2a8c245e3903e

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