Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3c4e7a0ed83d8c7…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 06:07:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: eedb185eeb1d25c3cf8bfd50d698ad3e SHA-1: 8b4c477266e84b8aa064d6f3850f9145d4d94933 SHA-256: e3c4e7a0ed83d8c77f8f6ab48103444e6ddf5f6707e7ad290f63f92c1364a4d3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free items to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn serves further malicious PDFs. The document body and embedded URLs strongly suggest a social engineering tactic to drive users to potentially harmful content.

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/406889139/coin-master-hack-2021-app-game-hack In PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-commands-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/hacks-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-hacks-and-cheats-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-glitch-no-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-robux-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/the-best-free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-scripts-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-hack-999999-robux-ios_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/pokemon-go-free-clothes-code_GM1094591345.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-hack-roblox-accounts-2021-december_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-spin-hack-trick_GM406889139.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
stream_002_off00003025.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3025 22624 bytes
SHA-256: ddd8231c91b0a671eee22924516aace5be4fcb50369156179ae078bfa7cf3a9c
font_01_sfnt_off000062e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E8 18580 bytes
SHA-256: 9ee7f6e729eaa8ccfa60f836f488dcd9dbdf367b2dcb4736acc286b6369c8b6e

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