Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bacbdfcf7ba579a…

MALICIOUS

PDF

45.7 KB Created: 2020-08-31 15:45:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a9dc73f5e1a63b58ef0e1afd99f402d SHA-1: a89229afcc99b63c97361a7693c537b2eafaeefe SHA-256: 8bacbdfcf7ba579a4a368ed6d19f9c3096d7ec2d5bd02bb2bc3fa0966ccab64c
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though partially obfuscated, contains text suggesting urgency ('account will be terminated') and includes the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to shopify.com domains, likely for SEO manipulation or to host further payloads. The primary malicious URL identified is https://ttraff.cc/wix?keyword=best+portable+phone+with+answering+machine.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=best+portable+phone+with+answering+machine
    • https://cdn.shopify.com/s/files/1/0431/6548/3172/files/quenching_medium.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6741/files/naruto_shippuden_episode_163_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0434/2169/6149/files/john_deere_l130_manual.pdf
    • https://static.usrfiles.com/ugd/b8c837_e5d6b7df37384fc9a880e88f05fb19f3.pdf
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/balance_general_de_una_empresa_ejemplo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4636/2527/files/29527243264.pdf
    • https://cdn.shopify.com/s/files/1/0435/1167/7083/files/annoying_alarm_clock_sound.pdf
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/gst_annual_return_notes.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/92374081185.pdf
    • https://cdn.shopify.com/s/files/1/0432/5300/6494/files/pozow.pdf
    • https://cdn.shopify.com/s/files/1/0430/6157/5834/files/17729575404.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/wokobirurixafika.pdf
    • https://cdn.shopify.com/s/files/1/0428/2669/4822/files/vomedevelarumorotigifutuk.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_off000071e5.bin
45c7e4a600706bc129e2334893a68f59d4a3c23c6460fe7268968b18f30283d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x71E5 5628 bytes
font_01_sfnt_off000084ea.bin
73ed64c8ec900b801271b9b9bde152fe2c9ac5232f5af1b215af20c97eb53e56
pdf-font-stream PDF embedded font (sfnt) at offset 0x84EA 10824 bytes