Malicious PDF — malware analysis report

Static analysis result for SHA-256 43aa608cc42cef2c…

MALICIOUS

PDF

42.6 KB Created: 2021-05-01 10:35:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dce435ebf06cfb6757fd439803a0ed7d SHA-1: b2a7cbda2f6a1d2d6dca20a2ee048847bcc0f0eb SHA-256: 43aa608cc42cef2c87c7b5b684ad8d109f9f9e8d709c2b28cdde2515d8beb505
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links, including one pointing to `https://netcdn.xyz/app/431946152/how-to-hack-pizzeria-roleplay-remastered-roblox-game-hack`, which is flagged as a malicious redirector. The document body and embedded links suggest a lure for game-related cheats or hacks, aiming to trick users into visiting malicious sites. The presence of multiple PDF lures hosted on `fridaytravelnepal.com` indicates a campaign distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/how-to-hack-pizzeria-roleplay-remastered-roblox-game-hack In PDF document text
    • https://fridaytravelnepal.com/userfiles/files/robux-hacks-that-work-2021.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/getbucks-free-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/earn-free-robux-online-no-survey.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-roblox-counter-strike.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-a-free-skin-noob-roblox-2021.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/redeem-code-roblox-free-robux-2021.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-gamepasses-roblox.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-glitch-acsesoir-free.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-hack-a-roblox-account-2021-october.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-builder-club-free-code.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004305.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4305 27108 bytes
SHA-256: 91ead7aa6baeff71bbd39485d69440d1566ecfce8f96c4fdcd8bc93077cf3d1f
font_01_sfnt_off000080d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D0 19596 bytes
SHA-256: 96f5c4f634700d7914777a623100143aefab78ba0471916073c3dbf1b12faaf0