Malicious PDF — malware analysis report

Static analysis result for SHA-256 168210d55090e63d…

MALICIOUS

PDF

35.8 KB Created: 2021-07-01 14:27:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3dd0aebc00553eed929685bc4a7dbfa2 SHA-1: 0a090ece4c58d17dfee86a45a718f178cb392b1c SHA-256: 168210d55090e63d67ecfb0d96617494d9ed386e0644d51b110ea8eca934f04b
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.co/app/431946152/how-to-get-free-robux-no-hack-no-surveyno-email-game-hack PDF link annotation
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/hacks-para-roblox-windows-10_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-dt-oget-free-robux-and-free-catilog_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-robux-paste-data_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/roblox-lumber-tycoon-2-cheat-engine-download-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/breaking-point-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-get-free-robux-100-real-2021_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/how-to-do-the-sex-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/hacks-como-conseguir-robux-gratis_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/free-4l-tiktok_GM835599320.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/robux-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/twitter-coin-master-free-spins_GM406889139.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_off00003120.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3120 22844 bytes
SHA-256: 32f93d7f195e9915d08d94427038c368800856774b21bb6e9098cae3cac31663
font_01_sfnt_off00006461.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6461 19904 bytes
SHA-256: a67a2d5a847422c748bf3b12e4a10972731ba93d33577b986cdeac4e33f9a1cd

Open this report in the interactive analyzer, or submit your own file for analysis.