Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f6300e299e84c8a…

MALICIOUS

PDF

34.0 KB Created: 2020-04-11 07:06:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 57229b16ec42b7c2db5e640e7617f01b SHA-1: a280f2e8d1a1bee384b3b93a83ab294248723186 SHA-256: 3f6300e299e84c8afe9f402a74c7aab313cc2818235f8823351fbe4170060b08
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, many of which point to domains that appear to be part of a link farm. The heuristic 'PDF_SEO_LINK_FARM' indicates a critical finding related to this behavior. The embedded URLs likely serve as a lure to redirect users to potentially malicious content or phishing sites. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 3

  • 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.
  • 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://74-123-77-240.mgwnet.com/uploads/1/3/0/5/130550997/130550997.html#calculus+6th+edition+by+swokowski+pd
    • http://themysticsmenagerie.com/uploads/1/3/0/9/130969759/barepovorajod.pdf
    • http://alexdanielski.com/uploads/1/3/0/7/130738765/falakis.pdf
    • http://bodyinvestment.net/uploads/1/3/1/3/131381679/9847522.pdf
    • http://faceandbeauty.net/uploads/1/3/0/5/130540823/3143350.pdf
    • http://artgroupie.org/uploads/1/3/1/3/131380011/5d7faf4a.pdf
    • http://jefferson-umc.org/uploads/1/3/0/7/130776149/jekutipaj.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_off00005ab5.bin
23af6ce0bc4975f6562e3ebdb73dcc537bc9b726283dc4d967178e68b1b1e874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB5 8416 bytes

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