Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee2d9c49479eca92…

MALICIOUS

PDF

35.4 KB Created: 2021-07-08 17:04:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f89a30308ed4b0318029c11c4a4393c0 SHA-1: 40dedb6791c1cf22cb23ab60480d31a7cc68d028 SHA-256: ee2d9c49479eca92891819c131c57f29ddb87fa1f7ef77a32d2392a4d3484788
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as a lure for free Robux and game hacks. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting the malicious site. No scripts were extracted, but the primary attack pattern involves social engineering via a deceptive document.

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/431946152/free-robux-without-downloading-anything-game-hack In PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/add-robux_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/https-webrobloxknife-simulatorcom-games-202120218-howtogetfreerobux_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/download-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/5-games-that-give-u-free-robux_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-ad-on-youtube_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/roblox-free-download-ps4_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/roblox-gift-cards-hack_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/minecraft-free-download-ios_GM479516143.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_off00003134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3134 22160 bytes
SHA-256: fa6a731abdd42a7c813d43e28697284448f0004bf1b36c8a4fd9b4ed3aa38aa9
font_01_sfnt_off0000627c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627C 20064 bytes
SHA-256: 4b9c18d9a006b22bcf5f0b8ca3ed5b82c179739203e5b30b6354743aff3950b6

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