Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b9f3f681aaa130b…

MALICIOUS

PDF

45.0 KB Created: 2021-05-12 22:40:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0db2e011f27add9da226f12584de7149 SHA-1: 1ad193b428204727d13f4269e7ec46f798ff8746 SHA-256: 6b9f3f681aaa130bd1c1dad07a67ec0f79f0fabc68b887d3e79793184842a978
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically luring users with promises of game hacks and free items. The document body and extracted URLs strongly suggest a phishing or scam attempt designed to drive traffic to potentially harmful websites. While no scripts were explicitly extracted, the nature of the links and the heuristic firings indicate a high likelihood of a malicious redirect chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/479516143/free-mojang-account-with-minecraft-game-hack In PDF document text
    • https://www.manmed.info:443/images/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-make-your-own-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004964.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4964 25076 bytes
SHA-256: 8d349226f0b6bcafe850275aaa3cb0b97a788e78335b22b958a24a698f1fb3ba
font_01_sfnt_off00008243.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8243 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off00008be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE9 18688 bytes
SHA-256: 60143c81e88e14cdfb7631f3b4f61d617c046054e7601d01d98adb150323207f

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