Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0621e759536a8b…

MALICIOUS

PDF

33.8 KB Created: 2021-07-06 17:01:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 3879fece7eddde338fdf5010d994e0ec SHA-1: 4b224fba193ecfd89a039889be09fd05c3f35a41 SHA-256: ff0621e759536a8b475cd557b38837bd9d0a87e61dded5434bb8f68d80da1052
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, disguised as game hacks and generators. The document body and heuristics indicate a lure to download or access potentially unwanted or malicious content. No scripts were extracted, but the embedded URLs and redirector behavior are strong indicators of a phishing or malware distribution attempt.

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/how-to-make-a-roblox-group-for-free-game-hack In PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-free-weapons-in-roblox_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/impact-hack-roblox-hp_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-free-spins-whatsapp-link_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-working_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-hack-programmers_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-cool-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/hack-roblox-comment-passer-a-travers-des-murs_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/robux-gratis-sin-hacks-2021_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/hcbb-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-hack-client-pc_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-free-rubux-hack_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
font_00_sfnt_off00003099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3099 20864 bytes
SHA-256: 9be9646603b8dab8c4caaf55deaacd6b6f782e1c9d40ac246d4c74dc5819ef93
font_01_sfnt_off00005da8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA8 19496 bytes
SHA-256: 14cafe897e1a2f278398660849a051e886c01303fa535fd92545c6b58a09d23d

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