Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0820fff1920343b…

MALICIOUS

PDF

41.6 KB Created: 2020-08-31 19:28:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52824f74439ede6ac2c97e2a0a6454b9 SHA-1: 6929b539fc488123f520d44960d26230a9f9e672 SHA-256: b0820fff1920343bd316d27c13be03de0ea944ccaf89ce48b30c645524dd27c1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Autocad floor plan tutorial' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary malicious URL is https://ttraff.ru/wix?keyword=autocad+floor+plan+tutorial, which is likely used to redirect users to further 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.ru/wix?keyword=autocad+floor+plan+tutorial
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/wow_cataclysm_4._3._4_twinstar.pdf
    • https://cdn.shopify.com/s/files/1/0464/6918/5686/files/2382915986.pdf
    • https://cdn.shopify.com/s/files/1/0432/4281/5643/files/65765234050.pdf
    • https://cdn.shopify.com/s/files/1/0434/6154/2054/files/gta_v_cheat_codes_pc.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2876/files/pdf_reading_aloud_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7888/files/subawifa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/nukexijonogatoretad.pdf
    • https://cdn.shopify.com/s/files/1/0433/4652/6361/files/kimamegotuwete.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/ford_4610_tractor_parts_manual.pdf
    • https://cdn.shopify.com/s/files/1/0456/5198/4551/files/lyrics_of_broken_hearted_girl.pdf
    • https://cdn.shopify.com/s/files/1/0434/1507/7022/files/73124765167.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/ziwidezuzobapuxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7137/files/dothan_utilities_report_outage.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/twisted_emma_chase.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/calligraphy_mobile_app.pdf
    • https://cdn.shopify.com/s/files/1/0437/0461/5066/files/92508143400.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/tunebebesojopepini.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/
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/twisted_emm

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000651a.bin
ae45e619324170668a10ed6c505537a4488d6aee85a20f590142cb691123b5c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x651A 4960 bytes
font_01_sfnt_off00007610.bin
495bd0d9194b37f6df46fa29dcaea82498a3ab5f17220a617e22c6510e83ecf1
pdf-font-stream PDF embedded font (sfnt) at offset 0x7610 10196 bytes