Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6f2612df878e744…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 13:45:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ba43acdb5113c30798dda07b006f0a1d SHA-1: c34576e3f24678bae92a1e588c917a2f2d4e11ab SHA-256: f6f2612df878e744f7ea918dc8287f2171b503448ae6d94d1f39f6e3c5b7c4d6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a critical heuristic firing for a game hack redirect lure, pointing to a known malicious URL. The document body also contains this URL, reinforcing the lure. The ML classifier also flagged this PDF with high confidence. The primary attack vector is likely spearphishing attachment, leading to a redirector that likely serves a malicious payload.

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-hacking-2021-jailbreak-roblox-100-sure-game-hack In PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-hack-counter-blox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-phantom-forces-free-vip-server_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-btools-hack-mega_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-roblox-virtual-item-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-link-inspect_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/join-any-roblox-server-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-space-outpost-tycoon-script-hack-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-speed-hack-in-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/best-clicker-games-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-gangsta-roblox_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_off00003165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3165 21344 bytes
SHA-256: b4924371ab972225d82853847d5d7236f85748d4f07654914056083258d70cde
font_01_sfnt_off00005fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCC 19648 bytes
SHA-256: 27b10b179c1495723adfe6f3f0a7454897d56868d6321286d2cf36ffc3323998

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