Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94446a7381135bb…

MALICIOUS

PDF

44.7 KB Created: 2020-08-11 05:02:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e954cd2ffa6202b90d11a0cd45acd7e SHA-1: 23a957544a4d39dc8e68faab73922e4fae7c77e5 SHA-256: d94446a7381135bb47cea6b30a2e67384fb76594b815db7875fb61ca22aa8e98
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=starbucks+consumer+behavior+case+study+pdf'. This URL is embedded within the document body, disguised as a case study. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious URL is likely used to redirect users to a malicious site for phishing or malware delivery.

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=starbucks+consumer+behavior+case+study+pdf
    • http://zadudi.diaryagaga.co.uk/uploads/1/3/2/8/132814930/f8d7e3fec44a3bc.pdf
    • http://ranutesiw.carpetcleaninghuntsville.com/uploads/1/3/1/4/131438641/5891879.pdf
    • http://voxalib.foreverbostons.com/uploads/1/3/1/4/131453329/xaxijilivarimexidow.pdf
    • https://cdn.shopify.com/s/files/1/0433/2827/4582/files/82390807391.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/dictionary_english_english.pdf
    • https://cdn.shopify.com/s/files/1/0435/8792/8223/files/cambridge_dictionary_full.pdf
    • https://cdn.shopify.com/s/files/1/0437/6068/1109/files/bolududedarabazowur.pdf
    • https://cdn.shopify.com/s/files/1/0447/4185/3333/files/creo_parametric_2._0_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/pirojavadalogaparaguta.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3817/files/minecraft_come_alive_1._6._4.pdf
    • https://cdn.shopify.com/s/files/1/0431/7600/1704/files/free_loft_bed_plans.pdf
    • https://cdn.shopify.com/s/files/1/0429/9381/1619/files/39069036940.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/gipipifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5843/8039/files/22051597248.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_off00006f99.bin
58c059a2e2e3835f5963ca5e8b594e73fae34fde6defe3b8c28d16c4d5223e74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F99 5832 bytes
font_01_sfnt_off00008349.bin
7d83873a8cc8599a01ce6103578d72a7938497c517303521d293709a9dc05f70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8349 10004 bytes

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