Malicious PDF — malware analysis report

Static analysis result for SHA-256 56244a2a4599e9a5…

MALICIOUS

PDF

32.5 KB Created: 2021-07-05 15:36:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 58bbde1f4824af0550047d2e1a798834 SHA-1: 48987d26afdf7e9dd9b7eb0cace2e8a47ad32f01 SHA-256: 56244a2a4599e9a54e38e62f969b25f08f881e5e82da40587e3ecad224e6ffb1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The document body and heuristics indicate a clear intent to trick users into visiting these sites, likely for further malware delivery or credential harvesting. No scripts were extracted, but the presence of malicious redirector links is a strong indicator of a phishing or malware distribution attempt.

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.tw/app/479516143/minecraft-pe-free-game-hack In PDF document text
    • http://digilib.unla.ac.id/repository/username-free-robux-site_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-coin-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-one-piece-rampage-script-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-gift-cards-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-xxtrefetrxx-is-hacking_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/wurst-112_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/rbx-claim_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-change-date-of-birth-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-spin-link-of-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_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
font_00_sfnt_off00002c0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0C 22212 bytes
SHA-256: b92c43f09fea9b6c967e434629c7f871fe77782927fcc5d2d6eaba8a10ec886c
font_01_sfnt_off00005d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 18008 bytes
SHA-256: 7b53852c349be1bc084196235092269a717ad06b6af355bc11c1fdb457e3227a

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