Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe39a72d8fe84f25…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 13:21:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9355f05c7cda3ea69819ba23f5b76911 SHA-1: be63c6694d867199622cc7bda679d0086e6bd042 SHA-256: fe39a72d8fe84f25f32b7014d94a3cf9b0f3fe5553b28622c1b433899b9972a8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free in-game items, directing users to a malicious URL. This URL is flagged as a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness.

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.co/app/431946152/free-limited-edition-items-on-roblox-game-hack In PDF document text
    • https://opac.itp.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/minecraft-roblox-games-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/are-there-free-roblox-game_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/download-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-noob-outfit-for-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-fly-hacks-download_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-do-u-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hacks-for-roblox-ro-ghoul_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-codes-for-robux-bc_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-bee-simulator-hack-download_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-draw-roblox-2_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3027 22092 bytes
SHA-256: 422cbe199748aa3aaeb3aeca0c6def382c65db14ee9568104630f9f16bffbf4d
font_01_sfnt_off00006147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6147 19308 bytes
SHA-256: 5e89a004b6a91062f971baec116437828bc34a412c64de986f71a8de1fa9137d

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