Malicious PDF — malware analysis report

Static analysis result for SHA-256 386fd3e481b22184…

MALICIOUS

PDF

44.4 KB Created: 2020-10-03 03:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86a723a39a8c5706aac2186b60d09115 SHA-1: 1dd99b8de84ec088b0ac85285d0d64adc7ab8474 SHA-256: 386fd3e481b221841ee0f74723382ad6cbb7c1ca5544c3d67c9a148589c383a0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One prominent link redirects to 'https://gettraff.ru/strik?keyword=air+conditioning+the+earth+ielts+reading+answers', indicating a potential SEO poisoning or traffic redirection scheme. The presence of numerous PDF links suggests an attempt to distribute malicious content or drive traffic to potentially harmful sites.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://gettraff.ru/strik?keyword=air+conditioning+the+earth+ielts+reading+answers
    • http://files.retrodollseurope.com/uploads/1/3/1/3/131382092/temiza_jeveja_gekujugilowesow_rivilimupajimev.pdf
    • http://files.harborimpactministries.com/uploads/1/3/1/8/131856851/3616556.pdf
    • http://files.becomingjewish.net/uploads/1/3/1/3/131398097/3997654.pdf
    • http://files.julianoshea.com/uploads/1/3/1/4/131453807/jibumojexoje.pdf
    • https://site-1037022.mozfiles.com/files/1037022/dimojejokanelofijovemi.pdf
    • https://site-1040250.mozfiles.com/files/1040250/diwapexogagesam.pdf
    • https://site-1038493.mozfiles.com/files/1038493/jawum.pdf
    • https://site-1039261.mozfiles.com/files/1039261/rewuxeb.pdf
    • https://site-1043032.mozfiles.com/files/1043032/pudusitivojodepowatowek.pdf
    • https://site-1036796.mozfiles.com/files/1036796/23575533210.pdf
    • http://gusupo.thedanceacademymi.com/uploads/1/3/2/6/132680949/2326038.pdf
    • http://files.ronnater.com/uploads/1/3/1/4/131438296/d6f94b9823443ae.pdf
    • http://kamojiwow.root5farm.com/uploads/1/3/1/4/131406289/namobirevexojeje.pdf
    • http://files.deerhazel.com/uploads/1/3/1/6/131637190/3960311.pdf
    • http://likezipim.summitbirthutah.com/uploads/1/3/1/6/131607208/laxowibizatoju_befujat_bafedakese.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_off0000612b.bin
af0ef2da6a992496f1ddfa2f0a269a06890837d1204d340cff1d59913ea11b0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612B 5068 bytes
font_01_sfnt_off0000725d.bin
3dbab1c43b2c57ab25b96260678c57e376ffa114d677dfb1ccf67fe464ee865e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x725D 10536 bytes
font_02_sfnt_off0000965d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x965D 4324 bytes

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