Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a96627ea5d194a…

MALICIOUS

PDF

43.6 KB Created: 2021-06-04 01:42:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d96d20348fba87fc5ab388591b9c2ebc SHA-1: 48cf9fe0cf3dba522fe46b70818134b5578162b0 SHA-256: 80a96627ea5d194aad186454d2c094ad1394514da34a674c07c99bc7ed066384
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 0.9865

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 https://netcdn.online/app/406889139/cmaster-club-coin-master-hack-tool-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pokemon-go-free-coin-promo-code_GM1094591345.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-models_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-robux-codes-2021-december_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-pe-hacks-2021_GM479516143.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_004_off00004f14.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F14 25188 bytes
SHA-256: 9d8f945dbcb5ed0fdad897b6fb44eb86f6e2ff7c70d64625240ca0c7b9f7a591
font_01_sfnt_off00008796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8796 18348 bytes
SHA-256: f0efa7bd578828e228852acb28a29fd722b45bccad7fbec0beae23dba8f9565c

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