Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6970f340af42a6…

MALICIOUS

PDF

92.3 KB Created: 2020-09-30 04:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44a1de1f36829edfd68834817d41b480 SHA-1: 2067e14df57be580e03d217c9ddcec57b8610dd9 SHA-256: 8b6970f340af42a61ee2b5050662772aa992155aeab757f4784a30208086011d
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to external PDF files. One critical heuristic indicates these links are part of a link farm, likely for SEO manipulation. Another critical heuristic flags a link to a known malicious redirector. No scripts were extracted, but the sheer volume of outbound links suggests a malicious intent to either distribute further malicious content or engage in SEO spam.

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=the+art+of+torah+cantillation+pdf
    • http://files.coupar-angus.co.uk/uploads/1/3/1/4/131412955/kexilulejog_bumufabutid.pdf
    • http://menor.heatherferrari.net/uploads/1/3/0/8/130874067/bikibixu.pdf
    • http://files.intuitivepetcare.com/uploads/1/3/1/4/131437157/pesutubofaluro.pdf
    • http://memuvuv.afterdivorce.net/uploads/1/3/2/6/132695300/sadudazoped-moraxupezubefig.pdf
    • http://loxaror.daniellerosephotography.com/uploads/1/3/0/8/130873825/gupomaxat_bumemurorijug.pdf
    • http://files.wildermansbooks.com/uploads/1/3/0/8/130814235/vibaku.pdf
    • http://nilivuxu.manouchetones.com/uploads/1/3/1/4/131452893/nalojuvi-wejalemalogujoz-wiposapurozudel-garurir.pdf
    • http://files.oceanlink-inc.com/uploads/1/3/0/7/130776177/nomomexunegetewe.pdf
    • http://files.sustainablewellesley.com/uploads/1/3/2/8/132815924/7079773.pdf
    • http://files.tiffanygilly.com/uploads/1/3/2/6/132682338/fubebosix_jitixebovaboxe.pdf
    • http://dixisulif.terriermath.com/uploads/1/3/1/0/131070722/729583.pdf
    • http://files.alaasimahschool.net/uploads/1/3/0/8/130814076/lezuxapumowolo.pdf
    • https://uploads.strikinglycdn.com/files/5c700e1c-aeb5-414b-81e6-5d46ae6a02d5/ranulases.pdf
    • https://uploads.strikinglycdn.com/files/32247d99-b1c4-487c-ae0f-a935442a05ec/32475416707.pdf
    • https://uploads.strikinglycdn.com/files/caf0f606-9b43-4c00-b129-1eb1b66ecdec/81940609150.pdf
    • https://uploads.strikinglycdn.com/files/71718f38-5570-4282-b9f5-5971abfeb4b1/birifuwibevidewemanaz.pdf
    • https://uploads.strikinglycdn.com/files/127a4396-1dd3-4dbc-bf20-7ec856263b25/lexupeteni.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000111f7.bin
6c106003797f0776049af7263d96637cd55cfc1582dc70b436a16a999b80b59d
pdf-font-stream PDF embedded font (sfnt) at offset 0x111F7 5016 bytes
font_01_sfnt_off00012301.bin
cccdc8fabf5e624fa8185349087c8aed3d5fbed9cd42010dce2aa7ed150a9467
pdf-font-stream PDF embedded font (sfnt) at offset 0x12301 22224 bytes