Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9ffd34481f490d…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 11:07:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a380465d073a07ecc1bb8e2fcdc3f64e SHA-1: f7d1721bf8de2c4303758684448fca107ce9642d SHA-256: 7c9ffd34481f490dc24e94fd976c6b051297d8afaf87fcc6194ded0c9b6cb3e5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely aiming to lead users to sites that host malware or further phishing content. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a malicious workflow.

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-online-roblox-play-game-hack In PDF document text
    • https://ibelive.tw/image/data/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-free-robuxhack_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-to-get-free-robux-in-2-minutes_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/roblox-hack-for-synapse-x_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/working-cheat-engine-bybass-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ibelive.tw/image/data/files/get-me-free-robux_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_off00002ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED3 22172 bytes
SHA-256: 542b2ca9fa981d6b5d0443832a77bd2ba74e9f639c9cf3b18a93fcab1ed867c2
font_01_sfnt_off00005fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCC 19104 bytes
SHA-256: d609988bc2f7c2cb56182df8d02bbabdc975136d5bacc7adcf2c4595615c59ed

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