Malicious PDF — malware analysis report

Static analysis result for SHA-256 d61fedaacb95bfa0…

MALICIOUS

PDF

41.4 KB Created: 2020-08-06 01:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87e01c883a271b262b9a5ab98e3a8d45 SHA-1: 65d9ed7ed9117bff7a16de254ffa36ee55f88329 SHA-256: d61fedaacb95bfa031d8afac2f2a02318a8ec6c266c76255d6c6b2e925f82405
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, https://ttraff.com/pify?keyword=pdf+to+word+mac+free+download, is designed to lure users into downloading potentially unwanted content. The document body, though heavily obfuscated, contains references to the malicious URL, reinforcing the phishing attempt.

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=pdf+to+word+mac+free+download
    • http://files.artbysarabardin.com/uploads/1/3/1/4/131453527/de6abe02d85.pdf
    • http://files.phillipsburglutheran.com/uploads/1/3/2/6/132695354/sukexupedaramoxunem.pdf
    • http://files.aminmohamed.com/uploads/1/3/1/4/131438299/fb1b0.pdf
    • http://files.taylorbibat.com/uploads/1/3/2/8/132814996/nixedimukexaderojop.pdf
    • https://cdn.shopify.com/s/files/1/0433/9122/1911/files/a_thousand_years_cello_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/4997/5961/files/14289682040.pdf
    • https://cdn.shopify.com/s/files/1/0433/7752/4888/files/26618713856.pdf
    • https://cdn.shopify.com/s/files/1/0433/9236/8798/files/58019165806.pdf
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/jijemekef.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/36212068680.pdf
    • https://cdn.shopify.com/s/files/1/0434/2838/0839/files/57280066377.pdf
    • https://cdn.shopify.com/s/files/1/0428/9236/1887/files/56913774590.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/liviferabuzujaremofo.pdf
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/16606191123.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_off000064a3.bin
cf405da5a57b0cff39e7fa3a07034ff9b7347039b4880597dbabb978b9fb3b44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A3 5084 bytes
font_01_sfnt_off000075e9.bin
a309c6fe212839c581e9d5f57be4863197678467171e1f55c85f13b5107dd287		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75E9 10328 bytes

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