Malicious PDF — malware analysis report

Static analysis result for SHA-256 3da26624a02d9b26…

MALICIOUS

PDF

34.7 KB Created: 2020-09-03 17:42:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f494a0f25f77258ffe0ac2977046ba6 SHA-1: 5842f3d942a25df619a19cc80ec5d5e497215d99 SHA-256: 3da26624a02d9b268f2eb6ab78a0677a90892675a52c75aea47cd0b268ba7010
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, which points to `https://ttraff.cc/wix?keyword=austenite+to+martensite+transformation%252B+ppt`. The document body also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded links to Shopify-hosted PDFs, likely to improve search engine ranking for the malicious lure. No scripts were extracted, and the PDF structure itself does not indicate specific exploit techniques.

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.cc/wix?keyword=austenite+to+martensite+transformation%252B+ppt
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/nizebitofitazuxibato.pdf
    • https://cdn.shopify.com/s/files/1/0435/3504/0664/files/vepikot.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/54121251681.pdf
    • https://cdn.shopify.com/s/files/1/0429/8889/6415/files/miputubavu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/zujofezozefadiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/6328/6691/files/business_plan_cash_flow_forecast_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0437/files/2013_vw_amarok_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/reragijod.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/android_material_design_bottom_navigation.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdf
    • https://cdn.shopify.com/s/files/1/0430/0301/9427/files/8511159878.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2095/files/assassin_s_creed_3_pc_pirate.pdf
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/banwell_fundamentals_of_molecular_spectroscopy.pdf
    • https://cdn.shopify.com/s/files/1/0440/6870/0310/files/breaking_bad_news_to_patients_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0436/3993/1033/files/incomplete_abortion.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_off00004a4e.bin
73ab92d7afb93925d714f5eb2e746c515573e509d165dc91268b13f378d16530
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A4E 5004 bytes
font_01_sfnt_off00005b3b.bin
5b95348de03159795736ce8975d496ea62818f3a18f3f5975904ef60f0708320
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3B 10116 bytes