Malicious PDF — malware analysis report

Static analysis result for SHA-256 1709c2dfdc737849…

MALICIOUS

PDF

45.4 KB Created: 2021-06-04 01:49:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 4e3939614967a604d334ebc973573dff SHA-1: 4b656d85271dcad1d4a3f2f58526bbfa0f0c116b SHA-256: 1709c2dfdc73784914ef290e68a58c66fbd6cedd0670a307ec5d4d8c45101b07
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and sites offering game-related cheats, indicating a phishing or scam attempt. The document body and embedded URLs suggest a lure for free in-game currency or hacks, which is a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 https://netcdn.online/app/431946152/what-games-on-roblox-give-you-free-robux-game-hack In PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-free-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-spin-and-coin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/reddit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/pubg-uc-980_GM1330123889.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/coin-master-links-for-today_GM406889139.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_off0000532c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x532C 24648 bytes
SHA-256: b0ed4992ee3d51232b98403db23afd096d214898c6f5e110ed3ad6a2d586e4ba
font_01_sfnt_off00008bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAD 19440 bytes
SHA-256: d075b9cdfa29af0d09f3a3e5cc134cf400d7d34255e3ca0094b6ab529e7e4150

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