Malicious PDF — malware analysis report

Static analysis result for SHA-256 3350a030e0188ac7…

MALICIOUS

PDF

35.7 KB Created: 2021-07-06 01:00:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0ed974bd4cdd8867434398c4ced0b7f6 SHA-1: 88676d660a66ead414e5363a77343b1e5ac57e92 SHA-256: 3350a030e0188ac7750cc10b88e803b9e3b40707c0a5cdc62a84f0e490af95ec
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/406889139/free-appsfor-coin-master-daily-rewards-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hoe-to-hack-the-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/what-to-do-if-your-roblox-account-gets-hacked_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-someone-on-roblox-with-google-chrome_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-system_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-flee-the-facility-cheats_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-jet-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/what-do-you-need-to-have-installed-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-use-cheat-engine-on-roblox-level_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/are-free-robux-sites-safe_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hacks-for-roblox-ninja-legends_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/synapse-x-roblox-free_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_off000031f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31F6 23468 bytes
SHA-256: 0cc22c383e90802b9567835464549af9200e8e307f77a83f19cf3878fcbc0989
font_01_sfnt_off000066ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EF 18932 bytes
SHA-256: 23f2122d1e025a40a200fe5bf9e157b0cd475f9e07a39137d42bc2e355502eb2

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