Malicious PDF — malware analysis report

Static analysis result for SHA-256 2639419ec7b51a39…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 18:25:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 64c5ef263d6d50ea80278526e56452e1 SHA-1: c55184f07be0bcf47c9091163cfb616190ebc001 SHA-256: 2639419ec7b51a39283eea3a2184e7450a991f15270240c7fb529bff40584cee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirectors and lures users with game hack content. The primary URL, http://netcdn.tw/app/479516143/minecraft-pocket-edition-free-game-hack, is identified as a malicious redirector. The document body and heuristics suggest a social engineering tactic to trick users into visiting this malicious link, likely to download further malware or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.tw/app/479516143/minecraft-pocket-edition-free-game-hack In PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/admin-code-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-hacks-mobile_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-hack-menu-android_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-jailbreak-money-hack-2021-november_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-new-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-pokeballs-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-hack-map-kat-roblox_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_off0000322d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322D 22100 bytes
SHA-256: 8e787243af6fc7433b9b405188fa1c464cd173e80aed8ad129703a38d1361fb1
font_01_sfnt_off0000630a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630A 18496 bytes
SHA-256: d7dbb020539bac47436d9b8d730b26902d9b4e27847468c1bc8c65a58603238b

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