Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f7f9a5a7a5ab71…

MALICIOUS

PDF

43.4 KB Created: 2021-05-12 09:12:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 59ac31a53f0a2ece65f7c8e3ba652340 SHA-1: 6a0009b8bb0b96e81cca269f269bcd7d6c928ae9 SHA-256: 38f7f9a5a7a5ab710327a31f1407bd669fa30c0e012f3247f7593079c4f45a5e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as offers for game hacks and free currency. The primary lure directs users to 'https://netcdn.xyz/app/479516143/minecraft-pocket-edition-free-ios-game-hack', which is flagged as malicious infrastructure. The document body and embedded URLs suggest a phishing or scam attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/minecraft-pocket-edition-free-ios-game-hack In PDF document text
    • http://libertad74.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • http://libertad74.com/images/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://libertad74.com/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libertad74.com/images/coin-master-hack-spin-link_GM406889139.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_003_off000049d4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D4 29648 bytes
SHA-256: 56ef70b1556c5f03d4b52c6b876d466d7b14e8d7dd0d5b78f505beebe0ecc89f
font_01_sfnt_off00008791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8791 18208 bytes
SHA-256: c28ef02d46b574f4e4415ca233fe29d1618229a9872b41257112e9e19ec80372

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