Malicious PDF — malware analysis report

Static analysis result for SHA-256 934dbc4eda24072c…

MALICIOUS

PDF

54.5 KB Created: 2020-08-29 11:59:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4055b147531e93997d8f59137103078a SHA-1: b6f3d126b76e7448c615e8172fa559db48066570 SHA-256: 934dbc4eda24072c7926519e7f2a91b0a4fe9378abf6f97dd571fe3283145cd2
120 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=bbe+maxcom+compressor+review'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. No scripts were extracted from this sample.

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=bbe+maxcom+compressor+review
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/jowokidujukopo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6589/2264/files/42685724779.pdf
    • https://cdn.shopify.com/s/files/1/0435/9385/9231/files/el_articulo_de_opinion.pdf
    • https://cdn.shopify.com/s/files/1/0446/3738/8963/files/analogue_and_digital_communication.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7174/files/wafuxanakum.pdf
    • https://cdn.shopify.com/s/files/1/0431/5915/8946/files/93056863945.pdf
    • https://cdn.shopify.com/s/files/1/0432/3174/0066/files/dalezunukusokezalibozule.pdf
    • https://cdn.shopify.com/s/files/1/0438/9657/0024/files/12241994648.pdf
    • https://cdn.shopify.com/s/files/1/0433/9692/3543/files/zuvonotefesezurunalamurot.pdf
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/virajibuxuriwov.pdf
    • https://static.usrfiles.com/ugd/b8c837_e810887798344cc2be36d688afd827bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_a9a74f8d37d344579b838ec11b08e0e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_c025833d1d234c23969e4c6b46ed53dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c0f970a1c59417fbeed5f5969150827.pdf
    • https://static.usrfiles.com/ugd/b8c837_253cc0ff78e042fdb1ed281ec2f3713b.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab96afde982e44ff8247b25864394a6b.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7ab0ccc24204598bf500f7b5bbfb89d.pdf
    • https://static.usrfiles.com/ugd/b8c837_6580a7c862b0427c98b99a42a432d154.pdf
    • https://static.usrfiles.com/ugd/b8c837_d843a90750ae4650b03735ca80350297.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_off000095d9.bin
4780dc6e3e8b4ba70089d8dfc091aaacc7fe5e34fbd067f4cd6480932fb6b345
pdf-font-stream PDF embedded font (sfnt) at offset 0x95D9 5456 bytes
font_01_sfnt_off0000a862.bin
b3c0415853b3d6ccfeb31e25f84f2dd3e9172c367f74b8b4c92d701197bd7ac4
pdf-font-stream PDF embedded font (sfnt) at offset 0xA862 10708 bytes