Malicious PDF — malware analysis report

Static analysis result for SHA-256 677c2a89f9f687bd…

MALICIOUS

PDF

45.5 KB Created: 2021-05-10 23:03:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c1af623be83ca5c25dfaf9bb6a0b6fca SHA-1: 87c939bbf8b3d3c1c4d1e06786b5b530f34918b5 SHA-256: 677c2a89f9f687bd78524096a178b30eb9beaafdde81bf927aa91db95a19eb7b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file 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 0.9507

Heuristics 4

  • 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/431946152/how-to-hack-roblox-games-game-hack PDF link annotation
    • http://www.gadanie.lv/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/hack-robux_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.gadanie.lv/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • http://www.gadanie.lv/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCC 24656 bytes
SHA-256: 3be6622f9e16713e49d57b644bc7955efef4102635761219c7622e28661e271a
font_01_sfnt_off00008456.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8456 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00008e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E18 18608 bytes
SHA-256: f0530f62cc2e234d68a11618bd0f649c02fcf1ebf2f14054a2e3aba439076e74

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