Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d221d9bfd3182e…

MALICIOUS

PDF

42.2 KB Created: 2020-08-14 16:56:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82f0a6ad9dfa53c4f6fa497d2caa8f85 SHA-1: c54c381281ebe9050b65bcc0fdaf5a1d7f828506 SHA-256: e3d221d9bfd3182e6c96b575c0651b686c2d6c84b5e0ac7ec5b4dabb2b5150f3
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site. The presence of a link farm and a malicious redirector indicates 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.ru/wb?keyword=manually%20manage%20music%20and%20videos%20iphone%20without%20syncing
    • http://files.icarerx.com/uploads/1/3/0/7/130740571/7314968.pdf
    • http://files.wethersfieldgirlsbasketball.com/uploads/1/3/0/8/130873880/mudepupiwases-sojigisegota-gejikaf.pdf
    • http://files.economyheating.ca/uploads/1/3/1/4/131437295/3704792.pdf
    • http://files.exoticfeeders.com/uploads/1/3/0/8/130874018/dabafudono_putemekabigipa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5661/0976/files/52271403866.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/jezaxusiguguvigunobufoji.pdf
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/bush_francis_catatonia_scale_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/adp_payroll_workcenter.pdf
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/veobecn_a_anorganick_chmia.pdf
    • https://cdn.shopify.com/s/files/1/0428/3550/9415/files/galunif.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2675/files/english_alphabets_calligraphy.pdf
    • https://cdn.shopify.com/s/files/1/0440/6280/2070/files/80884315594.pdf
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/20478166461.pdf
    • https://cdn.shopify.com/s/files/1/0451/9283/9317/files/apparent_digestibility.pdf
    • https://cdn.shopify.com/s/files/1/0434/0744/2072/files/sowivawimiramudem.pdf
    • https://cdn.shopify.com/s/files/1/0428/4245/6231/files/bermuda_triangle_book_in_marathi_free_download.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_off0000651b.bin
9ebba6c2c2342da7c029fef9f4a399ce5e5344462cbc0c9715e1039f52046a95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x651B 5652 bytes
font_01_sfnt_off0000784c.bin
52dc86950fbb613ebaea547f6c1b2a590dab7bddd3ede26e07552c35dc66f0f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x784C 10712 bytes

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