Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cd523e4026cbc04…

MALICIOUS

PDF

33.3 KB Created: 2021-07-04 23:12:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 653e3518920c182d27a49175eddb42a8 SHA-1: 7f15a6eba3dd356d5c4bc871b9abf77261c838d1 SHA-256: 0cd523e4026cbc048d54f2dee9b657bec8f6777ed860858686e00612f5585664
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs designed to lure users into clicking on links related to game hacks and free currency. The primary link, http://netcdn.tw/app/431946152/free-roblox-passwords-game-hack, is identified as a malicious redirector. The document's content and the presence of numerous similar URLs suggest a phishing or scam campaign aimed at tricking users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-roblox-passwords-game-hack In PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/how-to-get-roblox-for-free-on-pc_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/free-robux-2021-may_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/earn-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/roblox-person_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/how-to-get-free-followers-on-tiktok-fast_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/i-got-hacked-in-weird-writing-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/free-roblox-level-7-exploit_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/free-roblox-cardseasy_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn1smg.sch.id/__statics/gudangsoal/files/claimrobux-net_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_off00002c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C53 22104 bytes
SHA-256: d7a13a1065c9fd775696071dab74b7b9f246e23365c4d4ee925753c09b65897e
font_01_sfnt_off00005d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D33 19140 bytes
SHA-256: 747aa2265ba22015b70df9b0f732940e7d51a03feed92b94af0e06ec0829652c

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