Malicious PDF — malware analysis report

Static analysis result for SHA-256 b44979f9c5c3dee1…

MALICIOUS

PDF

43.4 KB Created: 2021-05-15 14:39:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 41dabe15aeb884d1a3e592c897f13e51 SHA-1: 0cb98bfbd45979c18b20254b7a692dd51804ef52 SHA-256: b44979f9c5c3dee15a96482cec34bc9af37de31a0487ff1b115ed8849febdbb2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure appears to be related to Minecraft and Roblox. The presence of a visual download button and the overall structure strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/479516143/minecraft-survival-hacks-game-hack In PDF document text
    • http://safetin.ru/images/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/free-robux-net_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://safetin.ru/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/robux-earner_GM431946152.pdfIn PDF document text
    • http://safetin.ru/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://safetin.ru/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000494c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494C 29972 bytes
SHA-256: f60c91ff70e448614b273a6a5b1325a39af8c4f6afe2121a9ff46e5430606646
font_01_sfnt_off00008838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8838 18064 bytes
SHA-256: b356890df1a237005749e25630c39dae3f7a9062fb148157208e134e16779e55