Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e2bc80f8eda35b…

MALICIOUS

PDF

45.4 KB Created: 2021-05-11 09:05:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 190f52c17e25c78f61b5584422386d81 SHA-1: 893150eb0d3c285b7c7c4908b71328aedeeefd5f SHA-256: c9e2bc80f8eda35bfd9b787e09dd5eb9ac1ce6128ad281d0d2e9b7b784fa0218
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious websites, masquerading as game hacks and generators. The ML classifier also flagged this PDF as malicious. The presence of numerous redirector links indicates a phishing or scam attempt, likely to deliver further malware or steal credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/minecraft-hacks-list-game-hack In PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/robuxglobalcom-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://digilib.akbidarrahma.ac.id/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000495e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x495E 28168 bytes
SHA-256: 5ba0ed4ccc5be3d4ace0683d1199cc52ca21d0f49df6b74b56fbc849edde5dff
font_01_sfnt_off0000873a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873A 2820 bytes
SHA-256: 972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714
font_02_sfnt_off000090da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90DA 17740 bytes
SHA-256: c2e082955acc44a54c2cd6792e97aac33f079296fe9f17b7b430410190c0edcd

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