Malicious PDF — malware analysis report

Static analysis result for SHA-256 d557c6ca16e3d130…

MALICIOUS

PDF

41.2 KB Created: 2020-08-17 06:38:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff36c2fa4318140651b04da83d0da3c6 SHA-1: 958a4b0fa8c912c04a4fd20cbdb9403f4e0e1392 SHA-256: d557c6ca16e3d130ddea3689c48b0d899bd78208104afed0ec24b8c41cf53570
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'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are hosted on Shopify but point to potentially malicious PDF files. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves luring the user to a malicious site via a deceptive link.

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=study+bible+macarthur+pdf
    • http://files.dalesdesignsonzazzle.com/uploads/1/3/0/7/130738562/f3c5b7d79b.pdf
    • http://gidana.jessicagoodman.co.uk/uploads/1/3/1/6/131606758/pitobogibik.pdf
    • http://files.newlifetempleretreats.org/uploads/1/3/2/7/132740296/544ea31e.pdf
    • http://files.seanhuttonmusic.com/uploads/1/3/1/4/131453255/soxitajudonut.pdf
    • https://cdn.shopify.com/s/files/1/0433/6772/7269/files/business_information_systems_bocij_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/38645063706.pdf
    • https://cdn.shopify.com/s/files/1/0434/5144/9504/files/download_bachon_ki_kahaniyan_in_urdu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/xokaxibitulepisen.pdf
    • https://cdn.shopify.com/s/files/1/0439/5322/5883/files/banogatatafive.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/fevovobujunefedi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0649/8728/files/fuvudanikagubagujarowux.pdf
    • https://cdn.shopify.com/s/files/1/0437/1087/3750/files/chattanooga_choo_choo_piano.pdf
    • https://cdn.shopify.com/s/files/1/0432/8561/0654/files/zukirodagotivasabawiwoxi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.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_off0000561a.bin
b65b6cca89e1bb323d94bec965a8002f41f3cc61e7883bd9713096d2d30e9bb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x561A 5228 bytes
font_01_sfnt_off000067de.bin
37dd5fa4ef2c1aab32dbef00d3b727299dd3ba03b27356f6c7f4bea2b36b7ac7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67DE 9824 bytes
font_02_sfnt_off00008998.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8998 4324 bytes

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