Malicious PDF — malware analysis report

Static analysis result for SHA-256 def5408dc0fbf649…

MALICIOUS

PDF

39.4 KB Created: 2020-08-28 13:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74960b4d51821ca8dd34a56f8f16e93d SHA-1: d42c09561147462bdb8a52bc1d32aebb9b352579 SHA-256: def5408dc0fbf6493f422f2c8baf0bdd70c55fd77b3907bc586d2ef10b51be0e
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This suggests the document is designed to lure users to malicious infrastructure by masquerading as a download for a popular ebook.

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=douglas+adams+hitchhiker%2527s+guide+to+the+galaxy+epub
    • http://filef.greenmantheatre.org/uploads/1/3/1/4/131407300/5487817.pdf
    • http://files.wheaten.se/uploads/1/3/0/7/130739316/f279939e6c1.pdf
    • http://files.maria-cipriano.com/uploads/1/3/1/4/131438641/revaka.pdf
    • https://cdn.shopify.com/s/files/1/0431/6807/1836/files/33896236579.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/edition_wow64_platform_failed_sql_server_2014.pdf
    • https://cdn.shopify.com/s/files/1/0440/6794/6648/files/china_s_belt_and_road_initiative_five_years_later.pdf
    • https://cdn.shopify.com/s/files/1/0438/0839/1330/files/webibezu.pdf
    • https://cdn.shopify.com/s/files/1/0462/3535/3248/files/facebook_cover_collage_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/4548/5725/files/66251692478.pdf
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/sabojuwamasitov.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/73827302753.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_off00005a23.bin
2191770a79b328ab127fcc5cafb987bbab588e1d1866ee029ec29cb8f585de8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A23 5892 bytes
font_01_sfnt_off00006e25.bin
ba1409465ff7a736befa854cdd29d8790d80dc71fa6e97ed5f12328ff908f045		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E25 10120 bytes

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