Malicious PDF — malware analysis report

Static analysis result for SHA-256 d76f692d112c5262…

MALICIOUS

PDF

32.8 KB Created: 2021-07-05 12:20:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7b4ab139ca9e42bd89e560c2720fb52a SHA-1: d956fae4bec011137e4d2eb3c10267064dffdaf2 SHA-256: d76f692d112c52622d5ae1a48218300eeefbaab07c7608732b02960764f37c91
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.tw/app/431946152/how-to-earn-free-robux-game-hack, lead to known malicious redirectors and other potentially harmful PDF files. The document's structure and content strongly suggest a phishing or scamming attempt designed to lead users to malicious infrastructure.

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/how-to-earn-free-robux-game-hack In PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-no-downloads-or-givaways_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-hack-snow-shoveling-simulator_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-hack-pastbin_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-edit-this-cookie_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/cone-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/pokemon-go-free-and-apple-watch_GM1094591345.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-please_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1C 21596 bytes
SHA-256: 156175da22d7777acc30230c3f4464be6e0b062c24d0265559851ab8c99f1c39
font_01_sfnt_off00005b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B76 18880 bytes
SHA-256: a522bee010909c1dfdd5b814bfadf8c7715ebc59745b399d37c475b37c42e617

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