Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b0ac00da17ee508…

MALICIOUS

PDF

44.3 KB Created: 2020-08-23 11:32:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dc57c5a85270734af417ebd8dfc9a8b SHA-1: 1e0ba89fd771246a8259320980c7392b8f818f94 SHA-256: 3b0ac00da17ee508d2c3db8ed1c8a417920de21a3b8bce405d1513ef6b6d24c9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms or redirectors. The document body, though partially corrupted, suggests a 'style guide' lure, which is likely a pretext to drive traffic to malicious or spam sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a URL leading to known malicious infrastructure.

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=boyfriend+jeans+style+guide
    • http://files.xmmphoto.com/uploads/1/3/0/7/130739227/jilanukigovaxakapak.pdf
    • http://files.settajay.com/uploads/1/3/0/7/130738641/1c61e5d9bf4.pdf
    • http://files.serenitysoundhealing.com/uploads/1/3/0/7/130776674/7311499.pdf
    • http://files.ebrahimkhanilab.com/uploads/1/3/1/4/131454034/9650357.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/lipup.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/bimusexawo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/21466590214.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/39647109894.pdf
    • https://cdn.shopify.com/s/files/1/0439/4532/8808/files/second_trust_deed_form_california.pdf
    • https://cdn.shopify.com/s/files/1/0430/0898/3203/files/zubepakepiw.pdf
    • https://cdn.shopify.com/s/files/1/0441/2211/2152/files/theories_of_social_work.pdf
    • https://cdn.shopify.com/s/files/1/0436/5543/0309/files/canon_eos_70d_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8951/files/29677932227.pdf
    • https://cdn.shopify.com/s/files/1/0433/6100/9829/files/81372713207.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32506959796.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_off00006f27.bin
c1beff966a9d320ba3930d79b569a4639d01316cb15b8e9a1bc409247178e639		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F27 5300 bytes
font_01_sfnt_off0000814f.bin
523fe25852c0d168480ea24780bcf2a1baa5a3b4174db08af7ba1768ccbbc392		 pdf-font-stream PDF embedded font (sfnt) at offset 0x814F 10320 bytes

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