Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e57679e578702cb…

MALICIOUS

PDF

42.2 KB Created: 2021-05-23 06:45:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7d3d4ab2c968a52f91bdf24b36d0325c SHA-1: ab637318ea7e4ba1ed5e321b81d173cb4cfd4874 SHA-256: 0e57679e578702cb42fefe18c759b886f7c8778bb6d39a5e15a19e211f9b9416
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a known malicious domain, disguised as a 'free generator' or 'game hack'. The document body explicitly mentions 'How To Get Free Robux No Verification' and includes a call to action to access a generator, which is a common lure for phishing or malware distribution. The presence of multiple redirector links and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8090

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/how-to-get-free-robux-no-verification-game-hack In PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/roblox-redeem-card-codes-free_GM431946152.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_off00003047.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3047 24060 bytes
SHA-256: 3a68c58c8a45afa72dd7ea703bcbf41c8ac630a6fcc9d90bda612a4f44817c41
font_01_sfnt_off0000674f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674F 8132 bytes
SHA-256: e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
font_02_sfnt_off0000823c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823C 18764 bytes
SHA-256: a0d8f559ae1a84b7fc559fdee6dca3899797d6ff6e3d64572866459a8961df23

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