Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce94c59d267f7cea…

MALICIOUS

PDF

44.2 KB Created: 2020-08-14 10:08:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a08bf02872ac19d7cb01cc7830d537c8 SHA-1: 9622fce9b966dabbfbad0306cca20931a3499b40 SHA-256: ce94c59d267f7cea4da1b675823f1b4a540709970470f96c53d8d7cbed9aac40
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. This URL is associated with a lure for a "Cricut coach playbook pdf free download". The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to increase visibility and traffic to malicious destinations. The ML classifier also strongly indicated maliciousness.

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/wb?keyword=cricut%20coach%20playbook%20pdf%20free%20download
    • http://files.sacredquest-peru.com/uploads/1/3/0/9/130970009/rubufotosugi.pdf
    • http://files.northcountrylittlesblog.com/uploads/1/3/1/4/131454270/lanebokowebokukux.pdf
    • http://zojarid.the-therapy-centre.com/uploads/1/3/0/7/130776330/8879766.pdf
    • http://files.steaksnlobsters.com/uploads/1/3/2/6/132681308/5921877.pdf
    • https://cdn.shopify.com/s/files/1/0428/1909/2647/files/beef_o_brady_s_menu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/punjab_govt_servant_benevolent_fund_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/5321/2060/files/94571490159.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/10760264863.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/15138334831.pdf
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/nuzeded.pdf
    • https://cdn.shopify.com/s/files/1/0433/6133/7494/files/19168330600.pdf
    • https://cdn.shopify.com/s/files/1/0434/1664/9890/files/reading_practice_ielts.pdf
    • https://cdn.shopify.com/s/files/1/0434/0780/2531/files/73818655577.pdf
    • https://cdn.shopify.com/s/files/1/0437/4642/7031/files/91224662710.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7696/files/case_580_super_k_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/3562/2552/files/10633622393.pdf
    • https://cdn.shopify.com/s/files/1/0440/6640/6550/files/hernia_umbilical_y_epigastrica.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/98710053080.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/
    • https://cdn.shopify.com/s/files/1/0434/0780/2531/files/7381865557

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006db4.bin
053f314c3d9bcc96513b7618a8015db8ca99bd7749ae32fa299b6ae1b3d4564b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB4 5368 bytes
font_01_sfnt_off00007ffe.bin
e8938f68ec8cf2ff4c5a44a948d463a045c67efcc21275e7e854969881a8b96c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FFE 10292 bytes