Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e8d226ef26db67…

MALICIOUS

PDF

34.3 KB Created: 2021-07-07 13:24:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0144cda02fec69125c17209baec87ace SHA-1: 62a8b05caa7ce479c83fc85a52cd494e0d32f5b6 SHA-256: 44e8d226ef26db679af4e50306848bcf7c4c21a6a9f3bbb62795ef96218ac672
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a known malicious redirector, masquerading as a generator for free game items like Minecraft accounts. The ML classifier strongly indicates maliciousness, and the document body reinforces the lure. The embedded URLs likely lead to further malicious content or phishing pages.

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/free-minecraft-account-game-hack In PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/how-to-get-free-skins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/pokemon-go-free-shiny-celebi_GM1094591345.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/rbx-website_GM431946152.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/coin-master-link_GM406889139.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/how-to-use-hacks-on-roblox-no-virus_GM431946152.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/rbx-claim_GM431946152.pdfIn PDF document text
    • https://elerning.ubkman1lampungtimur.com/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.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
font_00_sfnt_off0000328d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328D 22180 bytes
SHA-256: 1db2f902a5ff3854382f853fdbf2bddc782b15d200408d8a0504cb4e5f5bf7fc
font_01_sfnt_off000063be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BE 18140 bytes
SHA-256: bf622982fa8c99a0d325c1609f31225d3bf40058dc9cd86c15c3e8f5bbc20de8

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