Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87413ca634310d5…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 14:05:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1f0d4564a6e9131da29ee4edb8e0512b SHA-1: c8f6d1304d1d82930b9645ae48e80d69c7f70f69 SHA-256: c87413ca634310d52aa122945f5db92c4c9ecfd53cb30ab8949f737c20303c3e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a lure of free game hacks and currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts further PDF files containing similar lures. The document's content and embedded links strongly suggest a phishing or scam campaign aimed at driving traffic to potentially malicious sites.

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/free-roblox-website-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-anything-from-catalog-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hack-dragon-ball-rage-roblox-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/cool-boy-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hackear-juego-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-online_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/javascript-roblox-hack-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-hack-someones-acconut-on-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-delahoya-78-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/best-free-roblox-lua-executor_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_off00002fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE2 22804 bytes
SHA-256: db579c8148d09281a6473f924905ba3fa3990a6209f330a036484585797fbbd1
font_01_sfnt_off000062c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C0 19072 bytes
SHA-256: f0d59f1b4b35e580c3840cb277f851b856516c1cfd4bb27d28d5a2db6d497b93

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