Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9e2b1a7e4c50347…

MALICIOUS

PDF

36.4 KB Created: 2021-06-25 09:40:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5cfbf6b801ba5df07a6c40a6087d5ce5 SHA-1: 93575a870c791fdc9bd56ff809b8e07f716009de SHA-256: e9e2b1a7e4c5034704a2790ea231d313ccc2f163215fd98cf0b40b2d7071c0c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as game hacks or generators. The ML classifier and specific heuristics confirm the malicious nature of these links. The document body, though partially corrupted, contains references to these lures and associated URLs, indicating 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/roblox-spamming-hack-2021-game-hack In PDF document text
    • https://javisintlmedia.com/images/roblox-cheat-engine-61-download_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/robux-hack-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-robux-without-app-download_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-robux-code-21-01-2021_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/how-do-you-hack-roblox-kick-off_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://javisintlmedia.com/images/roblox-hack-site_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/cheat-engine-64-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • https://javisintlmedia.com/images/roblox-free-roblox_GM431946152.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
font_00_sfnt_off000034cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34CB 22708 bytes
SHA-256: 013a622256249a89bef021a406ae1537c6bab7964ed2c9b30f806265e3f7f989
font_01_sfnt_off00006789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6789 19616 bytes
SHA-256: fea873c661a3a7531563bcbcbf4b36c8b6cc96961e6043ac04f287411422286a