Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b830eededace72…

MALICIOUS

PDF

33.6 KB Created: 2021-05-25 10:03:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b0532e2c5fbe425da47c1af4fcfc0875 SHA-1: c57febc03fc234fbfc83edbf461b6eead2b9a45c SHA-256: 68b830eededace72e60332e01c397d82b957de9b2ad9121bef49586e6a4265a7
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'free generator / game hack'. The document body also contains similar lures and the malicious URL. While no scripts were extracted, the presence of malicious links and the lure indicate an attempt to trick the user into visiting a compromised site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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-hack-generator-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000298e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x298E 24476 bytes
SHA-256: 3cce4c0e1808eca8a1197edee02ef67a6fb5231b556f14e14e4a7369f00bea86
font_01_sfnt_off00006171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6171 18516 bytes
SHA-256: ac45002ee2c78c55a094f6344a5e95abe10f4ed7f4298fc77d5376065a98214b

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