Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd054a44937f5323…

MALICIOUS

PDF

33.8 KB Created: 2021-06-25 13:34:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c5593f88458bd8cd940fc8fbf41de0d5 SHA-1: 249942bda9e59cd82090d6f18460b95e44d7c21f SHA-256: dd054a44937f5323d9999da3691ac732b066316811dc0efacd184d96964012b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The primary lure URL is http://netcdn.co/app/431946152/cheat-codes-roblox-solar-strike-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this lure by mentioning game-related terms like 'Roblox', 'Coin Master', and 'Robux'. No scripts were extracted from this sample, but the presence of malicious redirector links and the lure content strongly suggest a phishing or scam attempt.

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.co/app/431946152/cheat-codes-roblox-solar-strike-game-hack In PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/sword-fighting-tournament-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/hack-exploit-roblox-download_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://bioscience.kyst.com.tw/image/data/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.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_off00002fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC6 21480 bytes
SHA-256: 3144c22a833a418151f3ef4fa2b12d4484bfad6dca00c0ab397bc51e97766b19
font_01_sfnt_off00005ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA5 19220 bytes
SHA-256: 62cd15ca34ea2c1df8e01dec84ba6e0007a510cb1b6f0586ad8dee26ab3ccbbe

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