Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6cf4bad3779ca2…

MALICIOUS

PDF

38.8 KB Created: 2021-05-12 07:04:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0536357599745be13fa837f7b1a8f5e3 SHA-1: 6a01a985c2421aefe57cf082542bc292e42befaa SHA-256: 6d6cf4bad3779ca2da324db4eeb90bd46c51dfb29f7e49a7e3912073906a4167
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains multiple links pointing to a known malicious redirector infrastructure, specifically advertising "free spin sites for coin master game hack". The document body also contains explicit calls to action like 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', indicating a lure to download or navigate to malicious content. The primary IOC is the malicious URL used in these lures.

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/free-spin-sites-for-coin-master-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_off000034bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34BB 25176 bytes
SHA-256: 0d9c40ba9843a3b5a8b9f9eac34a4432c858db2a91ad0ad22e76972700fbda2f
font_01_sfnt_off00006dac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAC 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000775d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x775D 17884 bytes
SHA-256: a210d42f6902d7d9d5bff07919c8107c405d033dd36282e8d99cfff98ec98e98

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