Malicious PDF — malware analysis report

Static analysis result for SHA-256 de20a6465275f4ca…

MALICIOUS

PDF

36.3 KB Created: 2021-07-07 18:08:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c79e63bf0dafef01f518cb7696f40efe SHA-1: d86434ac2c96ca9c6f2ce8200dcbfd264b318643 SHA-256: de20a6465275f4ca42ca513ab87cdbb518db88411619bed8a4d96d4922f8eea2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users. It contains embedded links, including one to a known malicious redirector at http://netcdn.tw/app/406889139/coin-master-free-spin-link-today-2021-game-hack. The document body and heuristics indicate a social engineering tactic to drive traffic to potentially malicious sites, likely for credential harvesting or further malware delivery.

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/406889139/coin-master-free-spin-link-today-2021-game-hack In PDF document text
    • https://xiangquan.com.tw/image/data/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-jailbreak-money-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/2021-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/i-killed-a-man-meme-hacke-d-a-roblox-server_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/denis-shirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-robux-hack-youtube_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-controversy_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-admin-hacks-2021_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/inside-the-world-of-roblox-pdf-free-download_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-34-4-hack-download_GM406889139.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_off0000348a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x348A 23120 bytes
SHA-256: db4bc11efdb5a888f3ff7276eadbe644ac07a7fcb93cbc765dbf72eabb13d90d
font_01_sfnt_off00006897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6897 19100 bytes
SHA-256: 87948dd456158924639af78db2b6f448ba4bec773812a2cc2fa62bc058a3e5dd

Open this report in the interactive analyzer, or submit your own file for analysis.