Malicious PDF — malware analysis report

Static analysis result for SHA-256 609a4842ef1ae2f0…

MALICIOUS

PDF

44.9 KB Created: 2021-04-25 16:17:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c8c95e554a89d32f839f6f1ea012b586 SHA-1: 065d38fdf77115a0ee756a467cf80386cdb3294b SHA-256: 609a4842ef1ae2f0495c6ad02562ab5018d15f46e3d762d8e3ea52e8ed765f0e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and cheats, with one specific URL identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'Hacks How To Get Free Galaxy Coins Roblox' and includes embedded URLs. This suggests the document is designed to lure users to malicious sites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

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.xyz/app/431946152/hacks-how-to-get-free-galaxy-coins-roblox-game-hack In PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/roblox-super-noob-obby-cheats.pdfIn PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/hacking-my-roomates-roblox-account.pdfIn PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/roblox-4all-hack.pdfIn PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/free-roblox-coloring-pages.pdfIn PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/roblox-shirt-free-shipping.pdfIn PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/roblox-hack-retail-tycoon.pdfIn PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/get-free-robux-if-you-finsh-ths-obby.pdfIn PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/roblox-tower-battles-hack-script-2021.pdfIn PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/cara-cheat-rebirth-roblox-mining-simulator.pdfIn PDF document text
    • https://www.wearmyspex.com/uploaded_files/userfiles/files/how-to-get-free-catalog-items-on-roblox-vortex.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000044b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44B1 27856 bytes
SHA-256: 01fdb9feb4a46123fefd6b5b549c86c444f538cf185bab5f4eeeb892b857ece8
font_01_sfnt_off000081cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CC 2848 bytes
SHA-256: 4737c2778a085e0cb49e73f3b054b1a71e3f40720d213b4bfda97f95a31bfbf1
font_02_sfnt_off00008b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8E 18912 bytes
SHA-256: af86f95fc82cdbe00d8429a2582b981452bbdb3a84a00bace43883bb4998c8d7