Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d349c7ae0afc6b…

MALICIOUS

PDF

44.7 KB Created: 2021-06-09 14:36:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7119897c85641221f73baeda1768952d SHA-1: add37927d160d25e97878389801e0695dbd68973 SHA-256: f3d349c7ae0afc6b152995da4f925d0ee7318148b7c1d0c4b077686f12a22f16
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically promoting 'game hacks' and 'free generators' for popular games. The primary lure URL is https://netcdn.tw/app/431946152/how-to-hack-a-profile-cookie-on-roblox-game-hack, which likely leads to further malicious content or downloads. The document's structure and embedded links strongly suggest a phishing or scam campaign designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/how-to-hack-a-profile-cookie-on-roblox-game-hack In PDF document text
    • http://svadba-moda.kg/images/free-robux_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-ro-get-free-robux-with-pastebin_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/robux-hack-exploit_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-hack-dino-hunter-roblox_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/get-free-robux-roblox-2021_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://svadba-moda.kg/images/hack-someone-roblox-for-free-robux_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-exploit-hack-2021_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-free-robux-2021-august-promocode-yt-hurry-2021202120210_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://svadba-moda.kg/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/noob-vs-pro-vs-hacker-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/roblox-april-fools-hack_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
stream_004_off000050c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C2 25116 bytes
SHA-256: d5a81444fa26675ed16f4be4ea1607c34ed1ec3178d25de6b83bcbfb9aad290d
font_01_sfnt_off00008b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B32 18620 bytes
SHA-256: 6412903686f6be51dd3cd20234163a4937412de73c6ecb20f3cd792c6a72dd91

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