Malicious PDF — malware analysis report

Static analysis result for SHA-256 60914d11ed5f1403…

MALICIOUS

PDF

44.4 KB Created: 2021-06-09 03:08:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 46a0fdab5d7b5b299a645ce6a56cfb97 SHA-1: 3499bdda5c2ccc294f1fa12cad823877b474f8c6 SHA-256: 60914d11ed5f140397eb1e54cd633abd5cd1037ae1a5bf48d8990fd2239130f9
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and hosts further malicious PDFs, all under the guise of free game-related content. The document body and heuristics indicate a lure for game hacks and free currency, designed to trick users into clicking malicious links. The embedded links likely lead to further stages of infection or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/smurf-backpack-gives-free-robux-generator-game-hack In PDF document text
    • http://dana1157.com/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/cheat-teleportation-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/skidmax-roblox-hack_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/hack-robux-pc_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-infinite-robux-for-free_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-hack-generator_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_004_off00004fa2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FA2 24840 bytes
SHA-256: 7e4a34ac20a353424eefb6e95740ab43023cd4824d6c290f9183edaceb5673fd
font_01_sfnt_off0000884b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x884B 19188 bytes
SHA-256: 4b83979d8f77f2cd2eda4a11386c4bbceccc085b72be84033c7d2d02a443be23

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