Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b6fad6458f28011…

MALICIOUS

PDF

42.2 KB Created: 2020-08-04 16:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 671b8d13257af515707014b6ba791f38 SHA-1: 8d87af84cd4ce4025e88bf68d9a4fbe132994f61 SHA-256: 3b6fad6458f28011f180863024ee3e71fc3ca909e0b5dd3409d41f539521b5eb
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources hosted on platforms like Shopify and other domains. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=wedding+march+felix+mendelssohn+pdf', suggesting a lure to a malicious site. The presence of numerous links and the critical redirector link strongly indicate a phishing or redirection attack.

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=wedding+march+felix+mendelssohn+pdf
    • http://files.carpetcleaningvisalia.com/uploads/1/3/2/7/132740515/1465868.pdf
    • http://files.johnjfrederick.com/uploads/1/3/0/7/130740249/sawug.pdf
    • http://files.jessicaharperyoga.com/uploads/1/3/1/6/131606727/1298821.pdf
    • http://files.socta.info/uploads/1/3/0/8/130815026/nebanim.pdf
    • http://files.developmentmedia.net/uploads/1/3/0/7/130775245/191367.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/noxijavaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/pijazaverunuxolonaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/povenigejojirijimidona.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3764/files/keller_isd_home_access.pdf
    • https://cdn.shopify.com/s/files/1/0431/5598/0439/files/38686505442.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/ut_schedule_planner.pdf
    • https://cdn.shopify.com/s/files/1/0438/4918/7493/files/baldur_s_gate_descent_into_avernus_4chan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/91631610807.pdf
    • https://cdn.shopify.com/s/files/1/0439/1400/2587/files/tiberil.pdf
    • https://cdn.shopify.com/s/files/1/0432/9717/7768/files/tapokegubizidemab.pdf
    • https://cdn.shopify.com/s/files/1/0435/0859/6900/files/39071527015.pdf
    • https://cdn.shopify.com/s/files/1/0437/3459/7784/files/63859963947.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/57284498135.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/vagimesi.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_off000065b3.bin
1b59a1927e93c24e79478dc07ed4ca6f26c84fddf236aa6f292a46541be2c2c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x65B3 5652 bytes
font_01_sfnt_off000078d6.bin
49a405808cb74112801953c9694b8e1ec4912afd9faebd088c5c4d5142527c20
pdf-font-stream PDF embedded font (sfnt) at offset 0x78D6 10064 bytes