Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84fe629f42c0e58…

MALICIOUS

PDF

43.7 KB Created: 2021-06-13 20:27:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1bb5c5140cd04a539cd145eb16bc3d81 SHA-1: a51362bd44f5f66e4e14c42e6ade2c5ee48227fe SHA-256: d84fe629f42c0e583db7e5f977e63807a5337984e48e3eb7baa3d00225d1d092
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically targeting users interested in game hacks and generators. The primary URL identified, http://netcdn.co/app/431946152/roblox-free-private-server-game-hack, is flagged as malicious. While no scripts were extracted, the document body and embedded URLs strongly suggest a social engineering lure to drive traffic to 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 http://netcdn.co/app/431946152/roblox-free-private-server-game-hack In PDF document text
    • https://www.manmed.info:443/images/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/i-need-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-no-human-verification-no-inspect_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/roblox-if-you-got-hacked_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • https://www.manmed.info:443/images/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-id-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/eyes-the-horror-game-update-2-alpha-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-fast-and-easy_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
font_00_sfnt_off00004b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B20 25804 bytes
SHA-256: 517ae76fe6a7c456d2a887619443ed9a4110296eec314dedf2b505083e2ceec2
font_01_sfnt_off0000877d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877D 18668 bytes
SHA-256: e13615fc541c6773219ee93b23084730d4d2bb963c294b20247dae9c67d148fa

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