Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6878ec0cf37c3e5…

MALICIOUS

PDF

61.7 KB Created: 2020-06-11 18:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84d5cecab27cf1f5bc4ab86947171efd SHA-1: db10076a8cfd867d7a08200935b482ec5d6b82b5 SHA-256: f6878ec0cf37c3e5e76724e8a2c8304501fd978b8b65631466ea45e6ef7d1e43
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document impersonates a cloud service, a common lure for users to click embedded links. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, many of which point to suspicious domains. The document body contains obfuscated text and references to PDF software, likely to appear legitimate. The primary attack vector is the embedded malicious URLs, designed to redirect users to potentially harmful content.

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://endlesshappiness.org/uploads/1/3/0/6/130639036/130639036.html#pdf+xchange+pro+3.6
    • http://electrobelle.be/uploads/1/3/0/5/130540266/ximiwefuposefa.pdf
    • http://74-123-77-65.mgwnet.com/uploads/1/3/1/3/131384373/5400fcd14de5f.pdf
    • http://creationcaresummit.org/uploads/1/3/1/3/131380126/jawuzasigo.pdf
    • http://mail.weymedia.net/uploads/1/3/1/4/131452904/fosubinofoxafepamovo.pdf
    • http://ibrafertil.com/uploads/1/3/1/4/131437633/rajabivumezad-sifokelin-guxenagegel-zexiguvu.pdf
    • http://limbojewelryblog.com/uploads/1/3/0/3/130313241/2577532.pdf
    • http://booking.myelegantmarriage.com/uploads/1/3/0/8/130874091/1692207.pdf
    • https://kugomiregu812748447.files.wordpress.com/2020/06/fitujipu.pdf
    • https://novodotowivo.files.wordpress.com/2020/06/870045559.pdf
    • https://juvavapu.files.wordpress.com/2020/06/82306377609.pdf
    • https://luperixul.files.wordpress.com/2020/06/18815551618.pdf
    • https://zabipapubu336182313.files.wordpress.com/2020/06/4952508873.pdf
    • https://guvewex.files.wordpress.com/2020/06/33829172600.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6e3.bin
c32e89a5172f6da669aa0f22571c9ce9f3e59e636c65114bf1191c1c9fdb8bd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6E3 10748 bytes

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