Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b6af4059c07ce1b…

MALICIOUS

PDF

45.9 KB Created: 2020-08-11 07:38:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bb91156d684df094e384e145867ad07 SHA-1: 1d504f585c6680b784c3ee613d361860765fff91 SHA-256: 4b6af4059c07ce1bb9a2038a30f28371805b1bbbd910ca282053fb14849c331c
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=ergonomic+workstation+pdf', suggesting a lure related to ergonomic workstations. The presence of numerous links and the malicious redirector indicate a phishing or redirection attempt, likely to deliver a secondary payload.

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=ergonomic+workstation+pdf
    • http://wikemap.bsupolice.com/uploads/1/3/1/1/131164250/lorilavurapoxi_subolexekejovi_lupewoxi_teradiza.pdf
    • http://files.divan.lowflying.net/uploads/1/3/1/3/131381802/c0e17aa5466676.pdf
    • http://files.thickandthintheatreproductions.com/uploads/1/3/0/7/130775076/1f88098df22.pdf
    • https://cdn.shopify.com/s/files/1/0437/3925/0853/files/biochemistry_mathews_4th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/0704/8860/files/86200937282.pdf
    • https://cdn.shopify.com/s/files/1/0429/9581/0455/files/42593909087.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/15951804020.pdf
    • https://cdn.shopify.com/s/files/1/0431/1112/1063/files/shadowrun_hong_kong_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5316/2389/files/bullet_physics_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0434/6911/1461/files/anemia_segun_oms.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/65526241451.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/probability_density_function_problems.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/clicker_heroes_import_codes.pdf
    • https://cdn.shopify.com/s/files/1/0434/2890/5127/files/gugib.pdf
    • https://cdn.shopify.com/s/files/1/0447/8962/9079/files/kojuxukabel.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_off000074e2.bin
51a15cbe226dfb9699695db3cfd7a3df52017d9745bf7687b4a747939ce90a82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E2 5556 bytes
font_01_sfnt_off000087c3.bin
4d9f282d9bafd435d07dd4fc823ce5b5cdb13dc9c231df62a5dcc2327c8a9c94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87C3 10288 bytes

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