Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc04989eb9931a6b…

MALICIOUS

PDF

36.0 KB Created: 2021-05-10 12:40:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f3827743adbd0c9b7a77db85df04d1bb SHA-1: 216f4c2a100e65849ecc9e645126d731ca194f23 SHA-256: cc04989eb9931a6bdffa43a6d8299394f803e2b6eac2188ae738152fe7e71ca5
170 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector disguised as a 'game hack' generator. The document body and embedded metadata also reference this lure. The presence of a 'MFA / one-time-code harvesting lure' heuristic suggests the ultimate goal may be to steal session tokens or abuse multi-factor authentication, consistent with credential phishing.

Machine Learning

  • Nyx PDF Classifier clean score 0.0243

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/roblox-hacks-and-cheats-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
stream_003_off00003048.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3048 25184 bytes
SHA-256: bedd1bc6e03b1fd2ca2db72bc2e2ec9618aba620fb3e9e33b5a2e5391f2b31b7
font_01_sfnt_off00006a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4E 18624 bytes
SHA-256: fd38699d39b76a4f9eae772e1d62c447b40f492bf7651a7365d5b223074a20b1