Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd6224f05ffe40e…

MALICIOUS

PDF

35.9 KB Created: 2021-06-20 03:33:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7aefbc126ae2800d6ae6036421522c98 SHA-1: aa471eca1d24461ddec5f4049c0295eac86ed14c SHA-256: 7dd6224f05ffe40e95953bbcd9d3b665f5829836d6666fefb374fa9f73ee4c6f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for game hacks and gift cards, directing users to a known malicious redirector. The embedded URLs and the document body content strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative 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/free-roblox-gift-card-codes-2021-unused-game-hack In PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/hacking-denisdaily-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/pokemon-go-free-85_GM1094591345.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/exploit-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/vouchers-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/ultimate-trolling-gui-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-free-username-change_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-any-face-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-free-shirts-and-pants-girl_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-dragon-ball-x-hack_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-items-in-roblox-catalog-working-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-unlimited-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-jailbreak-hack-infinite-rob-cash_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_off0000340f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x340F 22292 bytes
SHA-256: b7b0d08f19e6da205c3ea15080d3cce66ac09a4158bd8c6b96f361f1b11f9fc1
font_01_sfnt_off000065a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A0 19588 bytes
SHA-256: d0050b22b1575b026cda5754e18fa76c7d99fd57f12d326042661e7eeaa340ba