Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6e74b018963b0d2…

MALICIOUS

PDF

33.5 KB Created: 2021-07-05 12:54:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 79c470a5a0a1f377b2a32e162f4ccfb0 SHA-1: 582537b7197ad90b2365c2baf8ae201af9b9cd2e SHA-256: f6e74b018963b0d2c4596b37a311ad9c8054124952648a644de044c80df832ff
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-minecraft-for-free-on-phone-game-hack PDF link annotation
    • http://library.asih-husada.ac.id/repository/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-hack-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-and-builders-club-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-unlimited-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/pokemon-go-free-hack-download_GM1094591345.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/cheat-roblox-2021-phantome-force_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-cheat-engine-retail-tycoon-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/robux-fun-roblox-online-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/hack-visea-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-free-robux-2021-no-hack_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-how-to-fly-with-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-hack-revealed-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-get-perm-admin-on-any-roblox-game-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-hack-on-iphone_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-cheats-for-free-builders-club_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
stream_002_off00002dfe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DFE 22360 bytes
SHA-256: c55a5467bceb63437b527450e008c4429ba5baf147da1774ccf2f4d546d6b834
font_01_sfnt_off00005fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA7 18484 bytes
SHA-256: 487100d73f6d1c6bb9027b4b0f8fffe0540623d8809bb1f7b8366124ba2b3e2a

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