Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a2bbc3401c02a3…

MALICIOUS

PDF

38.2 KB Created: 2021-05-22 20:38:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9ef55e9fe05f1561d80e109c6d34189e SHA-1: 40f096a2dc057b628895840a3a75dc89c2b1f15a SHA-256: e2a2bbc3401c02a34c9a06a7273452fd79e63dad0999c26858a296e3d7bc2ca6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector pointing to 'free generator' content. The document body and heuristics indicate a lure for game-related cheats, which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious sites, likely for further payload delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/431946152/how-to-hack-roblox-accounts-game-hack In PDF document text
    • https://www.nara.org.uk/uploads/files/files/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • https://www.nara.org.uk/uploads/files/files/how-to-get-roebucks-in-roblox_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32FE 27620 bytes
SHA-256: 2d3ada2e4f4e011e62aeb7ddc47994799434389d54a99ea3e45a05fbe741b018
font_01_sfnt_off0000732d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732D 18588 bytes
SHA-256: 7bfa318362f39458d7d6cfaed4b7fb6212c616d22e88bbb7e9e73b07c323fe95

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