Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cbbc4fe630d9381…

MALICIOUS

PDF

38.0 KB Created: 2021-05-25 10:18:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d29fd75685ca298af13ee1eeb2869c72 SHA-1: a9ecfcd714986c52bf2f3e46ddbab92441c6fce6 SHA-256: 4cbbc4fe630d9381da74d7a467d18e99119302af7ca991b708dd67da33de9ce2
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free TikTok followers or game hacks, directing users to a known malicious redirector URL. This indicates a social engineering tactic to trick users into visiting potentially harmful sites. While no scripts were directly extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0126

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/835599320/free-tiktok-followers-no-downloads-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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000028a9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x28A9 22988 bytes
SHA-256: 659b86dde91c0421ee24db4a2705cd0ea64e42321891f3801e33b78672feb444
font_01_sfnt_off00005c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4E 3372 bytes
SHA-256: dfbbf67cbc7ecc66ac4d03805ccfff7e5c1407898ea3c5e2b9241b85217ff1cd
font_02_sfnt_off000067d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D0 3120 bytes
SHA-256: 49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca
font_03_sfnt_off000072e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E4 18264 bytes
SHA-256: d5c5ec98edba9b40f9bc8010b923702a5e25c64ded77377ab4934560472c0c7c

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