Malicious PDF — malware analysis report

Static analysis result for SHA-256 4845e7c3151f5138…

MALICIOUS

PDF

38.8 KB Created: 2020-08-24 20:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a5d3ca72e2657fbdc9bd35869eca90c SHA-1: 797832db1110651794663d8b2b68ec9815000a73 SHA-256: 4845e7c3151f513806439416aae0f71454bcd944c42380bde1fecac4d2085afe
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=perfect+ed+sheeran+piano+sheet+music+easy'.

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=perfect+ed+sheeran+piano+sheet+music+easy
    • http://files.rainsweptgame.com/uploads/1/3/1/6/131606025/vupebazenitoli-feziwegodowikip.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/devexpress_report_hide_subreport.pdf
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/dante_divina_commedia.pdf
    • https://cdn.shopify.com/s/files/1/0432/1689/6162/files/archicad_12_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0462/5570/2165/files/information_and_uses_of_mercury_barometer.pdf
    • https://cdn.shopify.com/s/files/1/0461/0487/1076/files/apology_for_poetry_by_philip_sidney.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1029/files/bapisufosewudemakajojozev.pdf
    • https://cdn.shopify.com/s/files/1/0431/5385/0524/files/social_media_definition_journal.pdf
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/nijidalemusijosakiganavig.pdf
    • https://cdn.shopify.com/s/files/1/0437/7133/0709/files/stick_it_and_roll_it.pdf
    • https://cdn.shopify.com/s/files/1/0436/3757/1744/files/antenatv_apk_1._0._5.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3414/files/76363499943.pdf
    • https://cdn.shopify.com/s/files/1/0440/5841/1158/files/basketball_score_sheet_fiba.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_off00004aff.bin
f56d892135f2eb00cca34f7f4daa8c941effa9e60a0b50a7cbedaf7f1a29f5e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AFF 5468 bytes
font_01_sfnt_off00005d6e.bin
9cf18bbf356ad422747f98bc3bd359d4349ce0250fba84994484205b848f2d0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6E 14856 bytes

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