Malicious PDF — malware analysis report

Static analysis result for SHA-256 804946899422ee93…

MALICIOUS

PDF

35.5 KB Created: 2021-05-22 13:07:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b45ab61b8f8816f3e80f63a474c82bc1 SHA-1: 8db89d2c6ed51fe4ec6d7df83d14bd139fec13f2 SHA-256: 804946899422ee930ddf8ce79a4dc8af172f3ca32e876d3a1fbe6fc66c46d09d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free in-game currency. The document body and heuristics indicate a lure for 'free Robux' or 'Coin Master' spins, leading to a redirector. While no scripts were directly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/lazyblox-com-free-robux-game-hack In PDF document text
    • http://cacpglobal.ca/images/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://cacpglobal.ca/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cacpglobal.ca/images/is-roblox-hacked_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003163.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3163 24312 bytes
SHA-256: 18972cc0727c32a0caeedbe744f00d29dcba71bebf3f4410fa06790d867f0374
font_01_sfnt_off000067b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B7 18840 bytes
SHA-256: c7a12f46af2ab2e47f5138dce66a585f9a7928693d977e55c66cac0a0236f754

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