Malicious PDF — malware analysis report

Static analysis result for SHA-256 c50379ed65341712…

MALICIOUS

PDF

40.0 KB Created: 2021-05-23 18:07:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 1b4cf56bb99f64b769b1cdbb50e7bfc1 SHA-1: 7ffa4daa088387c299934cb7c9b15e076a6509b8 SHA-256: c50379ed653417126f92b9b67eecf45ea97959b49947f1a3c1cdb386ffe0c353
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a malicious redirector link, specifically advertising a 'free generator / game hack'. The embedded URL, https://netcdn.xyz/app/431946152/free-robux-no-human-verification-no-survey-game-hack, is associated with malicious redirector infrastructure. The document body also contains text and a call-to-action related to accessing a Roblox generator, further supporting the lure. No scripts were extracted, but the primary attack pattern involves social engineering via a malicious link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0143

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/free-robux-no-human-verification-no-survey-game-hack In 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_002_off00002d22.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D22 26092 bytes
SHA-256: e0b66cd6abf48b1d60c362d7a6b5e8147d36a431dae013733261350ba6176ed9
font_01_sfnt_off000066e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E6 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off000078c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C8 19156 bytes
SHA-256: 339d1e55aee7c6169fc9e26e1541ea9d6c779f781f53a8c1d652dbe4fbeac478

Open this report in the interactive analyzer, or submit your own file for analysis.