Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b37c2c27e09748d…

MALICIOUS

PDF

34.8 KB Created: 2021-07-06 07:13:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f2316aba38d7fe2759104d09d5bfd18f SHA-1: ec54f1e080faeb8096f1bc0130e796e5805f3bb9 SHA-256: 7b37c2c27e09748d9aa5beb4b0cd56cf327d1afe000596b841bb1751626a907a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free spins for popular games like Coin Master and Roblox. It contains multiple embedded URLs, with the primary one, http://netcdn.tw/app/406889139/coin-master-free-spins-link-2021-march-game-hack, identified as a malicious redirector. The document's structure and content strongly suggest it's designed to trick users into visiting malicious sites, likely for further malware delivery or phishing.

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-spins-link-2021-march-game-hack In PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/cursed-roblox-outfits-free_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/pubg-hack-uc-20219_GM1330123889.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/nuevo-hack-de-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-pin-numbers-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/roblox-booga-booga-noob-vs-pro-vs-hacker_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/sistem48-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/invicibility-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/robux-in_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-free-roblox-robux-codes_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_off0000306c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306C 22904 bytes
SHA-256: 5c14b44ec2086d0b7a82a00eb381abfec3c52f777d7423af9b976e89ea430c59
font_01_sfnt_off0000639d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639D 18912 bytes
SHA-256: 9c5f3dff50ed497e4add18bd6910b8e1612dc8dbba3136152b5d734ea2e86e3b

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