Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ae2be2f634c9fbc…

MALICIOUS

PDF

40.4 KB Created: 2021-05-16 16:32:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 71ac4332f675dd7931312fb823a18712 SHA-1: 25f8e02fc7dbf35acd52376647299f3ebf62c6c4 SHA-256: 5ae2be2f634c9fbc29a54f87a163b463701788038cf20c098f396b4d29b8aca0
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 heuristic firings indicate that this is a critical finding, and the document body, though heavily obfuscated, contains references to the same malicious URL. No scripts were extracted from this sample, but the primary attack vector appears to be social engineering via a deceptive link.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

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/406889139/haktuts-coin-master-free-spins-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000035a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35A3 26632 bytes
SHA-256: b7929345db153700684cff5e5cf9553b46c1610e5c0cfe0cf4277e62b59db941
font_01_sfnt_off00007325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7325 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD6 18196 bytes
SHA-256: d21f7c9777ff22c572caba6bc61bff535e054503ba9d308437b2513133ac2854

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