Malicious PDF — malware analysis report

Static analysis result for SHA-256 29be737753dfc6f2…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 09:42:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 8f7b702206559bb00f6cd0120d27233a SHA-1: 69366ab8df80ad1657992aa4cb2094dcc772c058 SHA-256: 29be737753dfc6f221596ccf87088c09a6e2d6c85c12ef53fbe626796e98dc21
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a known malicious infrastructure, likely to lure users into downloading further malware or engaging in scams. The heuristic firings indicate that the PDF is designed to exploit user interest in game hacks and generators. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-com-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/hack-avatar_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/xray-hack_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.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_off00004fb7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FB7 24272 bytes
SHA-256: 934fcc8633c1cca152167188f0aedbdc256b8f3cdf720862746735af0f57e75b
font_01_sfnt_off00008769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8769 19136 bytes
SHA-256: d1af020e360c25834f1cccc6c6aad57abeacb17b4b066464116cb15edea710e7

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