Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b065d7efef0b71c…

MALICIOUS

PDF

41.1 KB Created: 2021-05-10 21:38:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7e5e8c7b0508e81bd0c3703b22ef19ed SHA-1: 0b62eba43b4e1980b2d3451e6af43582614b72c5 SHA-256: 2b065d7efef0b71cff2fff645549313f5789fb3df0cd2780996f635d183d7a0c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating a malicious redirector lure, specifically promoting a 'free generator / game hack' for Roblox. The embedded URL directs users to a known malicious infrastructure. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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-get-free-roblox-items-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off00003353.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3353 30172 bytes
SHA-256: a498b2f81e2f19b9d5681b987f7e184ceb9dca391db57e2e7adcc38c940a0484
font_01_sfnt_off000073f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F9 3132 bytes
SHA-256: 8694f563ba7e3859ce86ff137a4302e155b537e3a78e4a2f51d5f2a1694d9b5c
font_02_sfnt_off00007ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED1 18476 bytes
SHA-256: 8f186cfffdac824b8af051e9c3258ff2c6bc2a624daaf9438b2e2390608ff8bc

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