Malicious PDF — malware analysis report

Static analysis result for SHA-256 8adededd688748b3…

MALICIOUS

PDF

39.4 KB Created: 2020-08-22 23:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 770a4c37d2f8559f2216aa9b5955a037 SHA-1: 6803c3f07d135b4ad411fd615b6a7e5f6bac5cde SHA-256: 8adededd688748b396a2e44f1a1e5f4fdf84144d835441a4006dba75821a3296
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a string that appears to be the same URL. This indicates the primary goal is to redirect the user to malicious content, likely a phishing page or malware download. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm.

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.com/pify?keyword=best+behavioural+interview+answers
    • http://sosefudex.cicadabridal.com/uploads/1/3/0/7/130776791/gubamajuvu.pdf
    • http://files.michaelhogarth.com/uploads/1/3/1/4/131437806/1486986.pdf
    • https://cdn.shopify.com/s/files/1/0436/0749/0717/files/14266038014.pdf
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/xukamexuriluzije.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0141/files/pibiwu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/ielts_academic_reading_practice_test_with_answers_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/45063650208.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7255/files/belevajoterawimasamawoj.pdf
    • https://cdn.shopify.com/s/files/1/0438/4371/5222/files/silalidurus.pdf
    • https://cdn.shopify.com/s/files/1/0431/9690/7678/files/wisuvevefusidosuzesod.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/15205980322.pdf
    • https://cdn.shopify.com/s/files/1/0443/5014/4668/files/python_language_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/netekemotisaderiv.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_off00005f2e.bin
f66cccdd98a929b6adde445a8b7acb5d1fcaa405ea6fab2489a0f7581e213053		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E 5116 bytes
font_01_sfnt_off000070a0.bin
8f753930e5d1415bc5697108beca869744cc4005f7bb2c5ded52541f7178b163		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A0 9640 bytes

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