Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b260a2c00cb036d…

MALICIOUS

PDF

43.6 KB Created: 2021-05-17 23:14:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 50db468a58880da92677ed51f8876082 SHA-1: 7154243a8fa2bad061b8a9d90e22bdc6a2406ac1 SHA-256: 0b260a2c00cb036d5efdd5cb129f6f0df7e5dae0ade9e8d1fc66ec6b5e6d618e
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to websites that appear to offer game hacks and cheats, such as for Roblox and Coin Master. This aligns with an advance-fee scam lure, where users are enticed to click links that may lead to malicious content or further phishing attempts. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/roblox-account-taker-game-hack
    • http://fotoflas.gr/images/free-spin-and-win-coin-master_GM406889139.pdf
    • http://fotoflas.gr/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • http://fotoflas.gr/images/gameoffice-net-hack-coin-master_GM406889139.pdf
    • http://fotoflas.gr/images/coin-master-free-snacks-link_GM406889139.pdf
    • http://fotoflas.gr/images/robux-prices_GM431946152.pdf
    • http://fotoflas.gr/images/coin-master-free-spins-link-deutsch-ios_GM406889139.pdf
    • http://fotoflas.gr/images/get-more-free-spins-on-coin-master_GM406889139.pdf
    • http://fotoflas.gr/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdf
    • http://fotoflas.gr/images/hack-coin-master-2021_GM406889139.pdf
    • http://fotoflas.gr/images/daily-coin-master-free-spin-link-facebook_GM406889139.pdf
    • http://fotoflas.gr/images/coin-master-heaven-free-spins-link-2021_GM406889139.pdf
    • http://fotoflas.gr/images/roblox-hacks-com_GM431946152.pdf
    • http://fotoflas.gr/images/free-robux-without-human-verification-real_GM431946152.pdf
    • http://fotoflas.gr/images/free-robux-hack-2021_GM431946152.pdf
    • http://fotoflas.gr/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdf
    • http://fotoflas.gr/images/coin-master-attack-hack-apk_GM406889139.pdf
    • http://fotoflas.gr/images/free-spin-coin_GM406889139.pdf
    • http://fotoflas.gr/images/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://fotoflas.gr/images/coin-master-hack-reddit_GM406889139.pdf
    • http://fotoflas.gr/images/no-scam-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000481d.bin
9dfe2d59cb1112f440b9bd2efb85f97efa15792d449373ef99155d213a6a66f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x481D 27952 bytes
font_01_sfnt_off0000878c.bin
a45c208a7567f3e6804dce25d11280ac896a92182563dc04cbc3a4f5e023aa05
pdf-font-stream PDF embedded font (sfnt) at offset 0x878C 18428 bytes