Malicious PDF — malware analysis report

Static analysis result for SHA-256 7380e06863ee3d37…

MALICIOUS

PDF

39.9 KB Created: 2021-05-25 12:03:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9de5624d512ffdc3d90a96508ae7ada0 SHA-1: 3641b9105c105ffa6fcaa0ca75be404af2c7e5a4 SHA-256: 7380e06863ee3d376e207a0e5acb057d5aec29751457b7df0aca28341d0715e9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically advertising 'free Robux' and 'game hacks'. The ML classifier also indicated a high probability of maliciousness. These links likely lead to phishing sites or downloaders for further malicious payloads. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a lure-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8068

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-please-game-hack In PDF document text
    • http://mycookingpot.com/images/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://mycookingpot.com/images/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://mycookingpot.com/images/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://mycookingpot.com/images/minecraft-free-play-no-download_GM479516143.pdfIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000343c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x343C 26380 bytes
SHA-256: 91f40feeb03a6ae9a8cc839f85f1a390212ea9b7d51fed8b1fc17696ef80a0cc
font_01_sfnt_off0000704e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704E 2828 bytes
SHA-256: db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6
font_02_sfnt_off00007a05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A05 18472 bytes
SHA-256: a4143b220e35e332e52efa777ecf598d1a164c1d6c5ab1887881bf2674d2e637

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