Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d1c7f20ad887b7a…

MALICIOUS

PDF

46.1 KB Created: 2021-05-14 18:12:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b6cee1ae9d80738e619d034780ed99fb SHA-1: 35682da98f998ebd4ef2a8862c7776e585379d59 SHA-256: 7d1c7f20ad887b7a6ca88323533694428443e100289d94971a24f5389d6d7df4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically advertising game hacks and rewards. The primary lure URL is https://netcdn.xyz/app/431946152/blox-rewards-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/blox-rewards-game-hack In PDF document text
    • https://datavoiz.com/images/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://datavoiz.com/images/ww-robux_GM431946152.pdfIn PDF document text
    • https://datavoiz.com/images/free-roblox-card_GM431946152.pdfIn PDF document text
    • https://datavoiz.com/images/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • https://datavoiz.com/images/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://datavoiz.com/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • https://datavoiz.com/images/coin-master-latest-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/open-coin-master_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/mc-hacks_GM479516143.pdfIn PDF document text
    • https://datavoiz.com/images/free-robux-script_GM431946152.pdfIn PDF document text
    • https://datavoiz.com/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://datavoiz.com/images/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://datavoiz.com/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47BB 25988 bytes
SHA-256: 3815150b9a3399351b9fd077596eb3df60c845432d09f416a9dc9112e15f0df7
font_01_sfnt_off0000817d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x817D 6700 bytes
SHA-256: ae114634718854704d615808d33fb1b747d90eb28e420080bd5adbdfe7fb6a27
font_02_sfnt_off000091bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91BB 18192 bytes
SHA-256: 9fa72324c8cea46471c46a847a072321e15136d189e875d4b903010c9f48d7ea

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