Malicious PDF — malware analysis report

Static analysis result for SHA-256 e243c0c967fe2a11…

MALICIOUS

PDF

34.0 KB Created: 2020-08-22 15:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8c0731ee7ce3c269f1b3332f97357e2 SHA-1: 88a0584c968eb4be1c55ebb749de9427cc079848 SHA-256: e243c0c967fe2a1125be3a7b7a5a5f197abb10759b33311122ed535b04911d0a
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains references to movie content and the malicious URL, suggesting a lure to drive traffic to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=movie+counter+hd+movies+free
    • http://files.sarahconnatser.com/uploads/1/3/1/0/131070561/dogibenuwifix.pdf
    • http://gijozu.cabarrusflyers.com/uploads/1/3/2/7/132740873/mekasegipege-sonuko-vomexisovibefo-penop.pdf
    • http://figenipe.ddjohnsonassociatesllc.com/uploads/1/3/0/8/130814579/1931964.pdf
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/56461677132.pdf
    • https://cdn.shopify.com/s/files/1/0434/1425/7820/files/63367570705.pdf
    • https://cdn.shopify.com/s/files/1/0432/8043/3302/files/multichoice_bursary_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/4583/1335/files/cascading_style_sheets_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0447/0842/9977/files/spelling_test_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/30567918191.pdf
    • https://cdn.shopify.com/s/files/1/0439/4264/1832/files/6935265432.pdf
    • https://cdn.shopify.com/s/files/1/0443/0843/1004/files/job_application_letter_sample_for_any_position.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/19635903574.pdf
    • https://cdn.shopify.com/s/files/1/0428/7456/8860/files/polobezitodowikugaxitisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/voririsomikidak.pdf
    • https://cdn.shopify.com/s/files/1/0429/5789/7882/files/samsung_tv_app_android.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_off00004803.bin
eb0736b30d16a7da171f52c898b560a7f28a2d7987f786f8c0cda76896cea729		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4803 5084 bytes
font_01_sfnt_off00005934.bin
6a359754a0240018256febc24dc831d0c455b27c0df5d8a6c699487f333fdcab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5934 10200 bytes

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