Malicious PDF — malware analysis report

Static analysis result for SHA-256 1baf9c9f7a2fea74…

MALICIOUS

PDF

43.8 KB Created: 2020-08-09 20:12:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fa4c81ffdf28a2f594de7215bb626e0 SHA-1: b1746586aa5f8a2ebffe2bb556d32b57d94a0eff SHA-256: 1baf9c9f7a2fea74127fc9e63e15503f24663934d6e3336b93211a43692708ed
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This indicates a link farm or SEO poisoning tactic to lure victims. The document body, though heavily corrupted, contains text related to cancer symptoms and the wkhtmltopdf tool, suggesting a deceptive lure. The presence of multiple PDF links and a malicious redirector points to a phishing or redirection attack.

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/pify?keyword=signos+y+sintomas+del+cancer+de+pancreas+pdf
    • http://files.fishinginnovationsnrv.com/uploads/1/3/0/8/130814611/xoraxe-rafekoka-tamivewubitawez.pdf
    • http://basenefib.mskstech.com/uploads/1/3/0/7/130739415/dafuwemosa.pdf
    • http://files.faithinjeffcity.org/uploads/1/3/1/3/131380546/saniloku.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/brouter_in_networking.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/79228522118.pdf
    • https://cdn.shopify.com/s/files/1/0430/6426/2818/files/bodopalelobubedas.pdf
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/lepaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1503/7351/files/42831265349.pdf
    • https://cdn.shopify.com/s/files/1/0448/4136/9761/files/electron_configuration.pdf
    • https://cdn.shopify.com/s/files/1/0436/5837/9417/files/airport_runway_lights.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/embedded_c_programming_basics.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/buwixosowobo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wemulaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/15167826271.pdf
    • https://cdn.shopify.com/s/files/1/0431/7069/3282/files/riptide_ukulele_chords.pdf
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/certified_ethical_hacker_exam_prep.pdf
    • https://cdn.shopify.com/s/files/1/0434/1297/9869/files/67669773683.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://medlineplus.gov/spanish/pancreaticcancer.html
    • 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_off00006b5a.bin
08018930056d5659d6516ea63450b04bb5a56adc5899f2b326d127136e1b8871
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5A 5680 bytes
font_01_sfnt_off00007ea5.bin
b151cd4ef2d60d72fa2318d7b222c9f392d6a50821f5f3263816363b190988d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA5 10412 bytes