Malicious PDF — malware analysis report

Static analysis result for SHA-256 88ecf53d9351c838…

MALICIOUS

PDF

35.0 KB Created: 2020-08-30 03:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 817e5930afbe57c33e32df7bb514ae62 SHA-1: 3d1054e75cccfe0e77de1bb200761baae86bf443 SHA-256: 88ecf53d9351c8387532b02d34ef56104ad478cc7d1fce964549d744d5e9e7c4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

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, ttraff.cc, which is presented as a 'maverick logo wallpaper' download. This indicates a social engineering lure to drive traffic to malicious infrastructure.

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.cc/wix?keyword=maverick+logo+wallpaper
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pekuxiwitijumowiviw.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/60468607882.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/67981512760.pdf
    • https://cdn.shopify.com/s/files/1/0430/3237/9545/files/vazonizejov.pdf
    • https://cdn.shopify.com/s/files/1/0440/5251/2918/files/13828838860.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9517/files/zolaruxamizoxede.pdf
    • https://cdn.shopify.com/s/files/1/0431/9736/6436/files/ratogakagi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1409/5001/files/nejube.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/xiveweralivafaxukuxafa.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/mofipelivurugidi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/finexuzuzazikowajafisada.pdf
    • https://cdn.shopify.com/s/files/1/0431/3242/0264/files/carnival_of_venice_violin_solo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/rosetta_stone_spanish_level_1_workbook.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_off00003fc4.bin
bc2f27994645f8f682bacc17cf452b078bf4fbfcb74f771693731fe660f7ebd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FC4 4744 bytes
font_01_sfnt_off0000500c.bin
90ca507056f2fa21903c90abfd863a652dcc813fcdc8d8a3ec9436f6ba5515fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x500C 9672 bytes
font_02_sfnt_off00007142.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7142 4324 bytes

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