Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd74d6709ebe0f22…

MALICIOUS

PDF

34.5 KB Created: 2021-06-19 01:33:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1d416b38f9d03cba315d31b5d1fdcb4b SHA-1: 9abcbb56fc0e4b39e2ffea0ba90adfa72a9f62eb SHA-256: cd74d6709ebe0f22cffad7528006497e3f2c4a4c23dd8975562ff6d1bfa12999
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a game hack lure to entice users into clicking malicious links. The document contains multiple links to external sites, including one hosted on an IP address, which likely serve as downloaders or redirectors to further malicious content. The ML classifier strongly indicates malicious intent, and the overall pattern suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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.
  • 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) 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-account-hack-v3-game-hack PDF link annotation
    • http://103.40.122.33/akasia/repository/where-tiktok-free-view-iphone-11_GM835599320.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-tamil-songs-music-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/5-roblox-games-that-give-free-robux-working-youtubeyoutube_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-scripting-free-help_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/pinapple-outfit-hack-roblox-royale-high_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-roblox-free-robux-and-tix-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-roblox-outfits_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_002_off00002fad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FAD 22312 bytes
SHA-256: 5333b85949dc56dba0c08f1519279b9b2b83a537fe556bdd9fd874bdae265704
font_01_sfnt_off00006141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6141 19208 bytes
SHA-256: 14fdec22d80b4428997d5578e0889ec28f51ffd4a7ce28b2528ab0d6c53bfae4

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