Malicious PDF — malware analysis report

Static analysis result for SHA-256 677b84606052dd4a…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 04:04:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: f546bb6c5286fffd7b30b646a8a3d48e SHA-1: d70a7dc09d5fedf135f5f0495fc7f798e0e26ff8 SHA-256: 677b84606052dd4a85e47505b5788e7981ec33741408aac295596282a9d7b7ad
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as free game generators or hacks. The primary lure URL is https://netcdn.xyz/app/479516143/minecraft-free-download-windows-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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/479516143/minecraft-free-download-windows-game-hack In PDF document text
    • http://gomelavto.by/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/ww-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-generator_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/gamehunters-club-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/80-free-spins-coin-master_GM406889139.pdfIn 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_off000048a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A0 29656 bytes
SHA-256: b00a094ba45dde6386ff988a44eef56bbcac2144a63664ad118a0612e6966174
font_01_sfnt_off00008a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A46 18488 bytes
SHA-256: 01dcb0f2ff627f41b1d4924369c472c3c2df1c4c10fc263e12ce9879fd09d82b

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