Malicious PDF — malware analysis report

Static analysis result for SHA-256 c041258dbb6b0f97…

MALICIOUS

PDF

36.5 KB Created: 2020-04-06 07:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 494b41ca7f32eb70108d071ec95b8e98 SHA-1: 484eb5d77ec7f6f2d3359d0949b3efc2464fa5fa SHA-256: c041258dbb6b0f9749c8eb97ba0a7083bbd645e2523222b531a026a7efaf2818
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a distribution mechanism for further malicious content. The document body itself is largely obfuscated but contains references to the linked URLs, reinforcing the attack pattern. No scripts were extracted from this sample.

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://youbrewchicago.com/uploads/1/3/0/6/130621625/130621625.html#mitos+de+los+pueblos+mesoamericanos
    • http://simply-beautiful-online.com/uploads/1/3/0/4/130436244/85a120.pdf
    • http://sudip89.co/uploads/1/3/0/8/130814831/1406731.pdf
    • http://eastcoasttransplants.com/uploads/1/3/0/6/130604551/bebusekovagizodexiwu.pdf
    • http://bonitajewelers.com/uploads/1/3/0/7/130775336/1188107.pdf
    • http://springfieldtownshipnews.com/uploads/1/3/0/5/130539714/0389fffb8.pdf
    • http://realmisterketo.com/uploads/1/3/0/6/130640199/zezem-dovabi-nobozil-lipuwixo.pdf
    • http://christopherbirchmd.com/uploads/1/3/0/5/130541186/ruxivepaga_gaxoxik_raxada_fixexojalalij.pdf
    • http://northeastbathrooms.net/uploads/1/3/0/7/130775084/selutonivogufeki.pdf
    • http://wegizu.com/uploads/1/3/0/8/130813539/039c58990289.pdf
    • http://triangleyogabliss.com/uploads/1/3/1/4/131453133/janeralekatovis.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_off00006567.bin
dc0deb02ff6fc79ff2bb5dd86afb9fb12302f30c8b6720b7e4e6fe1548b3901f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6567 8408 bytes

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