Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae220cc6838c96a…

MALICIOUS

PDF

35.4 KB Created: 2020-08-25 10:50:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4734acc359120cc55c47fda352e7833e SHA-1: 7b5b427869beb7bbaca1bdba2f654c435c166901 SHA-256: cae220cc6838c96aea43f9bb8ec0345773101bbed6e50a383ec129774838f3d7
160 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=copano+bay+fishing+report' which is flagged as malicious. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm designed to obscure the ultimate destination. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be intended to trick the user into providing a password for an archive, a common tactic to bypass gateway security.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=copano+bay+fishing+report
    • http://wemanobew.upstagenydanceacademy.com/uploads/1/3/0/9/130969525/lapubodujexu-pejitug-vanutizoju.pdf
    • http://files.kimmiyama.com/uploads/1/3/2/6/132681829/dalusokiputowunufezo.pdf
    • http://files.habitatlacrosse.org/uploads/1/3/1/6/131606035/lazukeras-retosebofofun-piwufopod-jemikuzol.pdf
    • http://xalat.kateholland.com.au/uploads/1/3/1/6/131606339/c45c53d47f.pdf
    • http://files.moorlearning.org/uploads/1/3/1/3/131383619/mabin.pdf
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/baseball_weight_training_program.pdf
    • https://cdn.shopify.com/s/files/1/0462/1287/4394/files/gobilotutabonosimexo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6166/files/beliraluwopata.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3511/files/buduxezev.pdf
    • https://cdn.shopify.com/s/files/1/0430/8526/7097/files/kanuxitowifasibiboleka.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/96987760001.pdf
    • https://cdn.shopify.com/s/files/1/0430/5243/3557/files/rejurisokikugipa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/83925539402.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/suzuki_bandit_400_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/nefexuduxupojapotevela.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/jemodex.pdf
    • https://cdn.shopify.com/s/files/1/0434/2359/6711/files/rufemalovewexupefo.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_off0000464c.bin
17b4f591b14419ef130734d4a4efb7badc903561855a244612237ce13ba21da4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x464C 5280 bytes
font_01_sfnt_off00005838.bin
67ea045d535a7b637564d9ba52d2e6f4d3fa6ffb81757f9939740f028c42c7d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5838 2268 bytes
font_02_sfnt_off0000626a.bin
36d7eda531fed6b7a3c2b9571bede145f6d45d07abf26b455d0327cbe694d0b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 8732 bytes

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