Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d5103966a3a439d…

MALICIOUS

PDF

34.9 KB Created: 2021-07-06 21:21:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5f04d44c9c27caea4165e5d5e642cc09 SHA-1: f97d321667da00a6a34ea79dd4a7b8314fda9fe7 SHA-256: 5d5103966a3a439d8e67f7c7936f129c532bed1e1dcdf89f9306f89244cf48ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and heuristics indicate a social engineering tactic to trick users into visiting these malicious URLs. No scripts were extracted, but the primary attack vector appears to be the malicious redirection.

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/best-free-minecraft-hacked-client-game-hack In PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/getrobux-now_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/free-robux-hack-2021-may_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/http-coin-master-hack-club_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/free-robux-money-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/bux-blast-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/coin-master-attack-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/cheats-to-become-bear-on-bear-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/como-hackear-roblox-para-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pml.sch.id/__statics/gudangsoal/files/getbucks-com-free-robux_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_off000033f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33F6 22292 bytes
SHA-256: b8f81794bc25712682d6551ccc2f53ef98a0b99a566696cc8ff4f022c85e6c65
font_01_sfnt_off0000655f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655F 18492 bytes
SHA-256: de6dea86fd6d9d2ae37ee86cd92174b2735422e57a595b8bae0417e8dfd3f9d4

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