Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac56cf2f33b9071…

MALICIOUS

PDF

46.5 KB Created: 2021-05-14 09:54:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a0e00aaa3e36a97f5964de489bfd02e2 SHA-1: ad45a0366d2b7d1e0518495d3e30a131bbe7e576 SHA-256: 7ac56cf2f33b907141d90be41b62433939e95577bd2df397c00195c7af8346d4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a call-to-action phrase, indicating a phishing or scam attempt. The ML classifier and PDF URI heuristics strongly suggest malicious intent, likely to redirect users to sites offering fake game currency or cheats. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious workflow, possibly involving JavaScript for redirection or exploit delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • 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.
  • 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-bux-free-game-hack PDF link annotation
    • http://www.maakherumusic.net/images/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.maakherumusic.net/images/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.maakherumusic.net/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/hack-master-coin_GM406889139.pdfIn PDF document text
    • http://www.maakherumusic.net/images/free-spins-coin-master-cheats_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A27 25980 bytes
SHA-256: 5c08f3eb429bad52488df76720284cd03dae6f5eaea8064c22647a2c5397537e
font_01_sfnt_off000086c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C6 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000093d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D8 18088 bytes
SHA-256: b1a1c5aa5d70c9a0c9451475d1836048e8ca34dc29aa31eabf35c019fc4d80ab

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