Malicious PDF — malware analysis report

Static analysis result for SHA-256 db929c5b49623af2…

MALICIOUS

PDF

44.2 KB Created: 2020-08-03 11:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c1ab6d8f41f23c158f42d63819b76c6 SHA-1: 321dc92356809329b13ce67cda89226c59f60a4e SHA-256: db929c5b49623af271a3b20225c8a2c9844be98019c39770dbb576e25c7854d7
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. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure via the URL https://ttraff.ru/pify?keyword=present+perfect+just+already+yet+grammar+pdf. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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.ru/pify?keyword=present+perfect+just+already+yet+grammar+pdf
    • http://tuwuxi.marygautreaux.com/uploads/1/3/0/7/130739457/3696177.pdf
    • http://files.quantumpoint.org/uploads/1/3/0/8/130874031/fexurugomaseba_livorejalolokib_kuluvewowa.pdf
    • http://files.brandedcowboychurch.org/uploads/1/3/2/7/132712282/e223c.pdf
    • http://files.kissinkates.com/uploads/1/3/0/7/130775001/tilabebikusa-mimuzixodox-negiginijidux-fikekuxibinej.pdf
    • http://files.islandchamber.com/uploads/1/3/1/4/131453984/2f1024d01386cf.pdf
    • https://cdn.shopify.com/s/files/1/0436/9114/7417/files/retenufufibamosazo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7296/9109/files/javascript_import_json_file.pdf
    • https://cdn.shopify.com/s/files/1/0439/5198/0712/files/44132603984.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dosoxuwananeworatimuk.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6917/files/78725528609.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/kilopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3774/4534/files/55746093994.pdf
    • https://cdn.shopify.com/s/files/1/0437/9544/7970/files/neditawamaripisuvixaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2058/3065/files/tal_dorei_campaign_setting_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/vector_calculus_4th_edition_colley_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/bakugova.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_off00006dc0.bin
bdad515068ee89398d22fdcfd075f19b03f50095d4f17d54333c92bc7e3c0a12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC0 5656 bytes
font_01_sfnt_off000080fc.bin
ede84fa14d4b0f427434096d6aa5264cf200e6096924b08d1d93893c5a84493a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80FC 10044 bytes

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