Malicious PDF — malware analysis report

Static analysis result for SHA-256 89022f68d925a2ed…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 04:54:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c228860546451b3ace69de92f55b1794 SHA-1: 59c3799b02b9eb30df1dc5d7276f9f647ee193a4 SHA-256: 89022f68d925a2eded884facb5a968aea4b308734e69ff8e3854b368e3e2361b
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a tutorial or application form, aiming to trick users into clicking it. The ML classifier strongly indicated maliciousness. The primary malicious IOC is the ttraff.com redirector, which likely leads to further malicious content. The PDF also contains a link farm pointing to various benign-looking PDFs hosted on Shopify, potentially for SEO manipulation or to appear legitimate.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=endnote+x7+tutorial+pdf
    • http://files.fionamatisse.com/uploads/1/3/1/8/131857419/7966270.pdf
    • http://files.hikominiko.com/uploads/1/3/1/3/131383456/808db096675bd.pdf
    • http://files.themudlakeproject.ca/uploads/1/3/0/8/130874612/viwegiduwo-rarodinetesuwom-resejato-dovibulureja.pdf
    • https://cdn.shopify.com/s/files/1/0434/0006/9285/files/nibs_college_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0436/8800/1689/files/ansible_jinja_template_loop_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/1802/5122/files/about_pile_foundation.pdf
    • https://cdn.shopify.com/s/files/1/0429/9119/0175/files/92811690092.pdf
    • https://cdn.shopify.com/s/files/1/0431/4729/6922/files/kupefigotuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/virtualbox_chrome_os.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/office_employee_performance_self_evaluation_assessment_templates.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/16648089785.pdf
    • https://cdn.shopify.com/s/files/1/0429/3096/2588/files/bug_bounty_hunting_essentials_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3183641906.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/94664458866.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_off00005fc9.bin
8d093158932e3cae5ed1305fc6af0312c4995491f5e9c3e85e4009e0d98d8dfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC9 4964 bytes
font_01_sfnt_off000070ca.bin
1555927c2d4d1c7b977cbccfd0be857c1559c4829b69dff98ebdfdd91fe13233		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70CA 10328 bytes

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