Malicious PDF — malware analysis report

Static analysis result for SHA-256 8044542d3e20bf4a…

MALICIOUS

PDF

54.5 KB Created: 2021-05-19 05:30:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 5f25fd2e1063e74866a89c776950c029 SHA-1: 921270630d7f08cdc5a22437e2cd4e4e9e22aea5 SHA-256: 8044542d3e20bf4aa77854f76813405b50313fa32e3a86c5dade5498b744f2f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a lure for game hacks. The primary URL directs users to a site that appears to be a malicious redirector, likely serving as a landing page for a phishing or malware distribution campaign. No scripts were extracted, but the PDF structure and embedded URLs suggest an attempt to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8795

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-tower-defense-2-hacked-game-hack In PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-hack-download-ios_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/claim-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/coin-master-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • https://www.bathshoponline.co.uk/uploads/files/files/free-roblox-accounts-dantdm_GM431946152.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d0a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D0A 27896 bytes
SHA-256: 5a941c66cc0a5ebccebedc71c21f5ad4f94bc520117c02ea22481a8f59b72161
font_01_sfnt_off00008a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A48 7936 bytes
SHA-256: 218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e
font_02_sfnt_off0000a371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA371 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000b1fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1FD 18508 bytes
SHA-256: dfa7fded366e42e453bad8f972622469f3be5fd523f8d87af1dd357da012015d

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