Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fdd716f50e6e73c…

MALICIOUS

PDF

40.9 KB Created: 2020-09-08 14:46:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c20c81a4159fcb4b3332af43a21f476 SHA-1: 7de35353face715a1148c8876472436dff058c09 SHA-256: 1fdd716f50e6e73cfb43c0a12baccf62b2b440c2d83dca2fcc294184148424f3
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.me. The document body, though heavily obfuscated, contains the string 'Diesel technician job description template' and the malicious URL, suggesting a lure to trick users into clicking the links. The primary malicious URL is https://ttraff.me/wix?keyword=diesel+technician+job+description+template.

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.me/wix?keyword=diesel+technician+job+description+template
    • https://cdn.shopify.com/s/files/1/0429/8588/1753/files/nepomowirulukex.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/attestation_letter_of_good_character.pdf
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/rumaxobovujebinogoro.pdf
    • https://cdn.shopify.com/s/files/1/0435/0718/7872/files/esc_guidelines_heart_failure_ppt.pdf
    • https://static.usrfiles.com/ugd/b8c837_8298f1fa6bdb441c93f0ece271c65248.pdf
    • https://static.usrfiles.com/ugd/64e449_11d52bd3553148b3ac4eeb15e17ddd6e.pdf
    • https://cdn.shopify.com/s/files/1/0433/8309/5452/files/zygote_formation_in_human.pdf
    • https://cdn.shopify.com/s/files/1/0454/2867/0620/files/rex_guide_risk_of_rain_2.pdf
    • https://cdn.shopify.com/s/files/1/0433/6300/8664/files/84708211348.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/laxanawotoseb.pdf
    • https://static.usrfiles.com/ugd/13ae68_ab3c1da606f34aa990ba01451a28c023.pdf
    • https://static.usrfiles.com/ugd/269bb8_e2634e0962f5414584a648530a7433d7.pdf
    • https://static.usrfiles.com/ugd/3bf302_c642c2b4846147b7aa320adf5e393786.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_off00006178.bin
992b679ce24c1c5dad4832092f7a066fc7db3bc4070d10ff8eb05d2003b17f89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6178 5528 bytes
font_01_sfnt_off00007418.bin
0bfee12dacd3cf36bdbd0ee0d6000f223020aa0e78e5afda69afb730baeb9a3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7418 10192 bytes

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