Malicious PDF — malware analysis report

Static analysis result for SHA-256 e04b45f885741c2f…

MALICIOUS

PDF

43.0 KB Created: 2020-08-19 16:18:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f3a50462a14955a134cce16d218dc95 SHA-1: 986be62b5670d98f917020df059edd6313e8db0b SHA-256: e04b45f885741c2f77ac7bcc43f3bf8b1dc897f2ebf2b83cc268caad1459ac67
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 Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=fell+seal+arbiter%2527+s+mark+classes+guide'. This indicates an attempt to direct users to malicious infrastructure, likely for further exploitation or phishing.

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://ttraff.ru/pify?keyword=fell+seal+arbiter%2527+s+mark+classes+guide
    • http://files.hickmanfootball.com/uploads/1/3/0/7/130776788/kamubumul-dobozokowobiz.pdf
    • http://files.kristaandco.org/uploads/1/3/2/6/132682232/4197573.pdf
    • http://files.gypsyjamesboutique.com/uploads/1/3/0/7/130775436/101ba2b8e.pdf
    • http://files.decaturncc.org/uploads/1/3/1/4/131408942/4011009.pdf
    • https://cdn.shopify.com/s/files/1/0430/5997/0202/files/mowapazezininipuwinoka.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/1302092800.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/67350065387.pdf
    • https://cdn.shopify.com/s/files/1/0433/8604/4570/files/begas.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3062/files/clinical_hematology_atlas_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/5743/9129/files/383037583.pdf
    • https://cdn.shopify.com/s/files/1/0437/6998/7223/files/82940407506.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54748680829.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/gutowemiputupolidizovab.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_off00005dd7.bin
e702a9ce8bbdb343c589d52d0c5599ad442233f702bb6e0fda44944c60ea9322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD7 5120 bytes
font_01_sfnt_off00006f42.bin
052948dc73398c2bd4a30bb6d2c7501f79daaeb34575f63e9c0dfdaa4caa6ff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F42 9892 bytes
font_02_sfnt_off0000910d.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x910D 4324 bytes

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