Malicious PDF — malware analysis report

Static analysis result for SHA-256 1baa255dce257b38…

MALICIOUS

PDF

60.4 KB Created: 2020-08-31 20:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c06f50b61f3917255d88fd1a0477c113 SHA-1: 210d3025c6164cbe7cfc73230e348965cf2f28f3 SHA-256: 1baa255dce257b38697713264a4097f04964a870a1ed131fc70f2798c79f963a
150 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 'https://ttraff.me/wix?keyword=addzest+max550hd+manual'. This URL is presented within the document body, disguised as a manual, suggesting a social engineering lure. The PDF also exhibits characteristics of a link farm, with numerous external links, including one to a Shopify domain. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=addzest+max550hd+manual
    • https://cdn.shopify.com/s/files/1/0433/3718/7493/files/88026916565.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/barsaat_1995_full_movie_free_720p.pdf
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/introduction_to_hydrology_5th_edition.pdf
    • https://static.usrfiles.com/ugd/2b25b5_d95588680c03484e977643d3bc01858e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0bc6a4492a024c3e8a63f388d20d6214.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/98940271506.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/wenujazisoforuvaja.pdf
    • https://cdn.shopify.com/s/files/1/0439/6027/1006/files/aurangabad_bus_stand_time_table.pdf
    • https://cdn.shopify.com/s/files/1/0432/9596/5352/files/fijanotizanevusog.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/penyebab_parestesia_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/gibabamagunu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3403/1766/files/icloud_windows_10_all_photos.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/wobevajezas.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/62591230430.pdf
    • https://cdn.shopify.com/s/files/1/0432/4861/5579/files/16317123897.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ee3.bin
a075a1899a223fac91b8fb3ba3d51b977f4b10fc789ac887bf435c82d23ef940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EE3 23116 bytes
font_01_sfnt_off0000984c.bin
174052bdc9f8ee12eb38b1ed76977325be2f3f284423400f8c56bde2642af568		 pdf-font-stream PDF embedded font (sfnt) at offset 0x984C 5344 bytes
font_02_sfnt_off0000aa60.bin
c92baa339393020576dc1474930f767bad01b652ac7887e3e6668283ab9d5ee3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA60 10824 bytes
font_03_sfnt_off0000cfa6.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA6 16092 bytes

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