Malicious PDF — malware analysis report

Static analysis result for SHA-256 4954d306a1aa8d6e…

MALICIOUS

PDF

38.1 KB Created: 2020-04-03 03:21:55 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 94ee95660408f7cf8f31be34eeef26ef SHA-1: 2683352eb2e3db99c567c31322c684af54c4fd63 SHA-256: 4954d306a1aa8d6ef836f2b9d0849c879edfd8dc0d01c0da25e7326dde8930b4
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL points to an HTML file with a medical-related anchor text, suggesting a potential lure. The document body is heavily obfuscated but contains references to these URLs. The overall pattern indicates a link farm or SEO manipulation tactic, likely intended to direct users to malicious content hosted on numerous domains.

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://sdsufiji.com/uploads/1/3/0/6/130620283/130620283.html#icd+10+code+for+vitreous+hemorrhage
    • http://annastewartibarra.net/uploads/1/3/0/9/130969973/fuvebuzeruxafusamero.pdf
    • http://alldeserving.org/uploads/1/3/1/0/131071111/5940707.pdf
    • http://oregomi.com/uploads/1/3/0/2/130288720/4638231.pdf
    • http://wondermentpress.com/uploads/1/3/0/7/130776409/115624.pdf
    • http://odbny.com/uploads/1/3/0/6/130604681/tanor-wujagutol-vuzavenobibofet.pdf
    • http://jessebirdart.com/uploads/1/3/1/4/131407377/kudunazugata_visevefeket_ribidud.pdf
    • http://bklynbetty.com/uploads/1/3/1/0/131071309/nevor.pdf
    • http://bekindbyerikavanzin.com/uploads/1/3/1/3/131384401/xivogazig.pdf
    • http://velocityholsters.com/uploads/1/3/0/6/130604557/9360324.pdf
    • http://nurcamps.org/uploads/1/3/0/8/130813428/vukubi.pdf
    • http://filataiwan.com/uploads/1/3/0/5/130542831/2506421.pdf
    • http://originalcontententertainment.com/uploads/1/3/0/7/130738848/jadozav_bufimezi.pdf
    • http://arkresources.org/uploads/1/3/0/6/130639062/4025987.pdf
    • http://theorganicmilkcompany.com/uploads/1/3/0/2/130270768/3626577.pdf
    • http://outlawdj.com/uploads/1/3/0/3/130379635/zupadotukena-pewotukiw-kugam-dopanelanabuxub.pdf
    • http://devgroupincorporated.com/uploads/1/3/0/2/130289179/416905.pdf
    • http://mellaflooring.net/uploads/1/3/1/4/131437599/1381295.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_off00006db8.bin
b17e4631e83aa951fb8e2ffe76290a2d2a4be7e5e0d5d54e36feccbd5662496c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB8 7456 bytes

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