Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08660ff733d6463…

MALICIOUS

PDF

42.8 KB Created: 2020-08-25 13:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58799931f59ba458620d08cbfb038d59 SHA-1: 08fa7dda1980cd07efced0343c4a78224d3fd798 SHA-256: d08660ff733d6463e1e00458797fcb3de7e2cf5fce3cddcd02f920678ed86676
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body contains the text 'Atf nitro box setup' and the malicious URL 'https://ttraff.com/pify?keyword=atf+nitro+box+setup', suggesting a lure to download a malicious file. The embedded URLs point to a large number of PDFs hosted on shopify.com, likely part of a link farm to improve search engine ranking for 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.com/pify?keyword=atf+nitro+box+setup
    • http://files.tidalmediasolutions.com/uploads/1/3/0/9/130968943/1b4a9b.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6341/files/xabovo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/51560870002.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/89537062897.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/konexuvexipumexi.pdf
    • https://cdn.shopify.com/s/files/1/0463/3110/1345/files/kofewinajuzawe.pdf
    • https://cdn.shopify.com/s/files/1/0435/8445/4811/files/73444090875.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/45840048651.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lawup.pdf
    • https://cdn.shopify.com/s/files/1/0428/3177/3852/files/xenajilofewig.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/55491721721.pdf
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/tugelofufuxazi.pdf
    • https://cdn.shopify.com/s/files/1/0440/0214/8510/files/linus_tech_tips_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/das_agile_mindset.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d25.bin
2d3cfbc5d6105ec195d0cd4cb343c994e3ae3194e8729d601fb3e78d804d2045		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D25 4732 bytes
font_01_sfnt_off00006d45.bin
c7825dd626f232f4aefdb14ae76c1d0aa3aff6f906ff620e4fdaa02da876e815		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D45 10312 bytes
font_02_sfnt_off00009091.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9091 4324 bytes

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