Malicious PDF — malware analysis report

Static analysis result for SHA-256 466ab353c9acc300…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 18:50:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 422df62a76784c02b93a9cd62e232ce0 SHA-1: c822f3c23de6b7c711e16f861450a86c1a4002e5 SHA-256: 466ab353c9acc3008e03e99ccb9e8492588243e9befecedc20efa9463e90325f
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to trick users into clicking malicious links. The document contains multiple embedded URLs, including one pointing to a known malicious redirector infrastructure, which in turn hosts further malicious PDF files. The primary goal appears to be directing users to potentially harmful content or further stages of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/free-coin-master-links-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/cydia-roblox-hack_GM431946152.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/roblox-baton-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-in-roblox-2021-not-clickbait_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/earn-5-robux-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-hacks-march-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-and-tix-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-intro_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-hair-for-boy-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/ben-10-universal-showdown-roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-lvl-dragon-ball-final-stand-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-full-throttle-hack_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/cool-kid-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-generator-witout-paying-or-doing-nything_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-no-surveys-or-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-a-roblox-account-easy_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_off0000322c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322C 22896 bytes
SHA-256: 514821147c242e759347bac0965a11fbdfcf1a7c2ffb1c9182bd8ee5b1aace01
font_01_sfnt_off00006572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 18168 bytes
SHA-256: 8de0148014db431be508c837079dea1fd88eb4d3bf9aad0e575fcfb6a46af486

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