Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae7300bb43b765a3…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 20:54:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 077d4fbd6f028f37f94e1f8faa4ec632 SHA-1: 27dbb0820072c4bfcca5c702551b44d781d56511 SHA-256: ae7300bb43b765a3e3b1ff0abbd9130f1fb590322f7eda1ebab0d1fa6ae3bcea
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of embedded links, many pointing to IP addresses, that are designed to lure users into downloading further content under the guise of providing free in-game items or currency. The document body and extracted URLs strongly suggest a phishing or scam attempt, likely leading to malware distribution.

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/431946152/easy-points-gg-game-hack
    • http://202.56.165.220/digilab/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/best-way-to-make-free-robux-2021_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-coins-and-spins-link-for-coin-master_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/claim-free-robux-button_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/cant-make-my-items-free-in-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-secret-form-hack_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/minecraft-free-play-no-download_GM479516143.pdf
    • http://202.56.165.220/digilab/repository/cool-free-outfits-in-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-not-fake-2021_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/hakarian-roblox-hack_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/italwhts-the-best-free-horror-games-on-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/yt-fmm-roblox-hack_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-spins-coin-master-2021-today_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/coin-master-game_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/free-goahead-london-roblox-buses_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-girl-clothes-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-cheat-engine-download-for-mac_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/coin-master-hack-version-download-ios_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/cheat-download-for-hacking-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/get-free-robux-without-human-verification-or-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003015.bin
a1bcc6f0bb553b78a6c45f57ef6cd4e755c64de2dab523d4c2a238083e0c3313		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3015 22520 bytes
font_01_sfnt_off000062a4.bin
c78d3206fc3a175e957daa845b2a05021b4d88b907a7997885cd36474f45fea2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62A4 18604 bytes

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