Malicious PDF — malware analysis report

Static analysis result for SHA-256 8505020add7aaea4…

MALICIOUS

PDF

45.9 KB Created: 2021-05-12 01:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5eadc1627883e65ce9c83a4d34d7b742 SHA-1: f1d16f621a378c49cd9e82d5b85820e1c7d8ac1c SHA-256: 8505020add7aaea45155eb5d2f92a87047b179ff5023299061db75be391af742
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 https://netcdn.xyz/app/479516143/minecraft-pocket-edition-free-apk-game-hack PDF link annotation
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/how-to-hack-coin-master-game-ios_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/minecraft-hacked-client-bedrock_GM479516143.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://e-learningmtsn8nganjuk.com/__statics/gudangsoal/files/free-spins-coin-master-links-thursday-november-28-2021_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
font_00_sfnt_off00004e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E9A 30196 bytes
SHA-256: fc40c4480035d899dbf41948d30ee5db879f9ed53c8e0a0eb7ed9dadef6b7cdf
font_01_sfnt_off00009130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9130 18384 bytes
SHA-256: d3d1d430428c73896de9795e5eeef6e82810e36860bb7f8fcd97e9577ce89645

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