Malicious PDF — malware analysis report

Static analysis result for SHA-256 4055968f3f0afa82…

MALICIOUS

PDF

94.4 KB Created: 2020-04-13 01:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 790694bcf01d4397eda68682eae99c89 SHA-1: 62683cfae800333e211a2923184920cebdd481b1 SHA-256: 4055968f3f0afa82f68cfe67919be13eb203b07c7d1cc19de7b606939ea26625
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, a technique often used for SEO link farms or to distribute malicious payloads. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a likely attempt to manipulate search engine results or redirect users to potentially harmful sites. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

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://avalonvending.org/uploads/1/3/1/3/131379544/131379544.html#como+se+escribe+hablamos+luego+en+espa%C3%B1ol
    • http://sanctuary-yoga.com/uploads/1/3/1/3/131383426/2ba12a96302.pdf
    • http://coachandersonsclassroom.com/uploads/1/3/0/9/130969757/risig.pdf
    • http://ogcandy.com/uploads/1/3/1/4/131410234/6154458.pdf
    • http://524lab.com/uploads/1/3/0/4/130483606/9042818.pdf
    • http://innovateimpactengage.com/uploads/1/3/0/6/130603979/419a8760.pdf
    • http://ministryiq.net/uploads/1/3/1/4/131438563/2400130.pdf
    • http://english313courseportfolionicolearnold.com/uploads/1/3/0/2/130271108/90549d.pdf
    • http://addicted12inc.com/uploads/1/3/0/8/130873863/dekavaganeloja.pdf
    • http://stophighspeedrail.com/uploads/1/3/0/3/130313748/570f9f3919f.pdf
    • http://outagainthefilm.com/uploads/1/3/0/8/130813134/nipigutug.pdf
    • http://jaimietannerhair.com/uploads/1/3/0/5/130590357/wutibojanujokuf_wupatip_medenupo_zomunadixedu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012482.bin
c66e8d987c38bc7681f3c7d8838cde40ab65eb118e587d9881345d893f92a17b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12482 10612 bytes
font_01_sfnt_off000148e5.bin
04097624ba7efb6d498e50c0754d17ab0e2a49191a5d2a4f11af69291a88ee85		 pdf-font-stream PDF embedded font (sfnt) at offset 0x148E5 4364 bytes
font_02_sfnt_off000156bb.bin
65ca2fa633a49bc637c245e3469a24bec82cbb291b9200d770c42ee2df1588ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x156BB 16096 bytes

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