Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7252eadf73fdc27…

MALICIOUS

PDF

44.5 KB Created: 2020-08-05 06:58:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0058839ce6566a445f1888005f6562cc SHA-1: 392835dcf0e9a58a524eaf931aedebcd31b47190 SHA-256: c7252eadf73fdc27b9e28c756d80e8612dec9082d18dd060aa6d6dcb1e137583
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 document about 'stainless steel material'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates the primary URL leads to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger scheme to generate traffic through numerous external links, many hosted on Shopify. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/wb?keyword=stainless%20steel%20material%20pdf
    • http://files.thesmalldetails.ca/uploads/1/3/1/6/131606289/65eaa4dd574319.pdf
    • http://files.mrllab.org/uploads/1/3/2/7/132740277/ee897.pdf
    • http://files.jiucle.org/uploads/1/3/0/8/130814232/nanomugirup.pdf
    • http://files.northeasternwomensrugby.com/uploads/1/3/1/4/131454791/butewelimodeg-resolab.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/66070874062.pdf
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/git_delete_a_commit.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/57223371551.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/zenuvatelenik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0437/3803/8426/files/payment_of_gratuity_act_1972_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4937/0268/files/17870058332.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/chez_nous_student_activities_manual_answers.pdf
    • https://cdn.shopify.com/s/files/1/0448/1217/3463/files/free_english_grammar_test_with_answers.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_off00007024.bin
ff98a2cbda195fa3638ebcaa61deaaf6d6ecd3f750d91ed10a6172700a4fe38d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7024 5292 bytes
font_01_sfnt_off00008209.bin
0f9f3831b5189660decf55cb2e9babac5f2c5ce2a4ecde360032118a9471f085		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8209 10352 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.