Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d15cf0f44ee002f…

MALICIOUS

PDF

33.5 KB Created: 2021-07-02 02:11:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 45a283cb7d02bfa4843bbda91de3fe0b SHA-1: cfdd5d0ac5eb690a679c92b363f554109aa4db7c SHA-256: 5d15cf0f44ee002f93e58acee3df05ad3195bc3cc9e873757668cc896decdd71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors and other PDFs, masquerading as game hacks and cheats. The primary lure is a link to 'hack-roblox-sped-game-hack', which is hosted on known malicious infrastructure. The document body and heuristics indicate a social engineering tactic to trick users into visiting these sites, likely for further malware delivery or phishing. 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.co/app/431946152/hack-roblox-sped-game-hack In PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hack-de-robux-version-2335202112-apk_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/free-fbi-badge-roblox_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/dantdm-roblox-shirt-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-lumber-tycoon-2-i-cheated-for-this-box_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/funny-roblox-avatar-ideas-free_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hack-guis_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-forcefield-hack_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-play-piano-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/how-to-get-free-robux-from-a-hat_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fk.upnvj.ac.id/repository/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.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_off00002cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CEE 22028 bytes
SHA-256: 7e17d3b187a230754b7a9b6face9078b5faa278c8c3ed46ab954b8dfb6997747
font_01_sfnt_off00005d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D90 19008 bytes
SHA-256: cb818420aea6633e90c72fce4e8f189f12070baf51d74adb3975c48cebddba59

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