Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3fb45e39893bc3…

MALICIOUS

PDF

82.5 KB Created: 2020-08-07 06:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a005c129801bc80198e8e53337b30f5 SHA-1: 1b2cb07935f6f8f0cfb771dafa3ed5c188a76610 SHA-256: 3a3fb45e39893bc307bae1eabffab8c23cb55517ad8bad9e36b20a3a60f7151a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body contains obfuscated text and references to a PDF download, suggesting a social engineering lure. The primary malicious link is https://ttraff.cc/pify?keyword=the+duchess+of+malfi+john+webster+pdf, which likely leads to further malicious content.

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.cc/pify?keyword=the+duchess+of+malfi+john+webster+pdf
    • http://files.rotarykimberleysouth.club/uploads/1/3/0/8/130814021/tojujedunewofel_luwuviwukuragi_gexiku_jufevikazopunol.pdf
    • http://files.puzzledog.ca/uploads/1/3/0/7/130775551/megikemane-wafurumebos-vadobuvomufifo-relok.pdf
    • http://files.bobsshanghai66.com/uploads/1/3/1/4/131453698/5990916.pdf
    • http://wekuw.oliviergueant.com/uploads/1/3/1/3/131383314/fimefagi-vadur.pdf
    • https://cdn.shopify.com/s/files/1/0434/5767/5431/files/fodesi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4041/5644/files/bteup_exam_date_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/sanojukadifamotowowebag.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/rutax.pdf
    • https://cdn.shopify.com/s/files/1/0429/1756/0473/files/suvadovo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/28796387705.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/gozizufivipenow.pdf
    • https://cdn.shopify.com/s/files/1/0431/4349/5841/files/11838240283.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/zugipeviwobefegemuki.pdf
    • https://cdn.shopify.com/s/files/1/0435/2675/0357/files/3831532306.pdf
    • https://cdn.shopify.com/s/files/1/0435/7806/5055/files/pisopujisuruxeworijuzi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/jefamijurefiludom.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/ronavuborulupa.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_off00010679.bin
f6e0a4226474a97b2b3480872410f69f4fe68d149e7f9583194d365158086864		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10679 5652 bytes
font_01_sfnt_off0001199a.bin
d4d7a6ef548a7b0509413d80a711b490893d0e2785b30dcaaf662c83f9f3a5f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1199A 10264 bytes

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