Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b01328e3a6f9d4…

MALICIOUS

PDF

32.9 KB Created: 2021-07-05 23:26:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2013b801df3f8ae50276fb789bee5474 SHA-1: 03c54855621ce580fed9229023e93b7126ee70e0 SHA-256: d9b01328e3a6f9d481155953e255bb6b2b60f05929bf29fd1968afebea7ee1a4
220 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. It contains numerous links to redirectors and SEO link farms, including the primary malicious URL http://netcdn.tw/app/479516143/how-do-i-get-minecraft-for-free-game-hack. The document body and embedded links suggest a phishing or scamming attempt, likely to lead users to further malicious content or potentially download unwanted software.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/479516143/how-do-i-get-minecraft-for-free-game-hack In PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-pe-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-gun-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-accounts-not-banned_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/ldshadowlady-roblox-someone-hacked-my-acount_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-com-free-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/avatar-the-last-airbender-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-free-developers_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-daily-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/c00lkidds-roblox-hack-client-rc7_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-rixty-robux-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hacks-for-pyramids-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-dragon-ball-super-2-hack_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_off00002e88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E88 21512 bytes
SHA-256: 29e3be9802ffd936b6be77aa723ddd2baaad6f79b6fd754ec48136405ee149d9
font_01_sfnt_off00005d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9B 18328 bytes
SHA-256: d38873dd10bf62843c258bc2fec7bb4da7ee856e758ae4fc2658a38414cf8eb3

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