Malicious PDF — malware analysis report

Static analysis result for SHA-256 96483f44d005201d…

MALICIOUS

PDF

44.7 KB Created: 2021-06-08 21:45:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 4cada3ae34fdd0be0ee9b6406a2a67f3 SHA-1: 232fc6f87c3488576db801e72f7476c3520a2ca2 SHA-256: 96483f44d005201da4092290a4499bae86ac457d6b0531f26cf834012320a965
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users with lures related to game hacks and free currency. The embedded URL leads to a known malicious redirector, likely serving as a lure for phishing or malware distribution. No scripts were extracted, but the document body and heuristics strongly suggest a social engineering attack to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9870

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 https://netcdn.tw/app/431946152/robuxlive-stream-robux-hack-game-hack In PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/minecraft-pe-015-0-apk-free-download_GM479516143.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-foxy-food-coin-master_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://man2samarinda.com/__statics/gudangsoal/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.man2samarinda.com/__statics/gudangsoal/files/free-robux-legit_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_off00005069.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5069 25128 bytes
SHA-256: eb3888bbc3391bf5454ecf58457372b0c1bd45f1c9149db2fd4be8b509189b86
font_01_sfnt_off00008a01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A01 18920 bytes
SHA-256: 95f73c5bfcc2fc3b5546bf600d388ba411f536695aa08e220d209d3f0ef0a488

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