Malicious PDF — malware analysis report

Static analysis result for SHA-256 8375a661cba6e8c6…

MALICIOUS

PDF

40.6 KB Created: 2020-08-23 11:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12d50770f650dffcebcba93191533b80 SHA-1: 69c53ea5f7b88ed0976fd330a2820e8df828833b SHA-256: 8375a661cba6e8c689b375619c54cfd11648c9c7b02620aff20b9d1a447bd040
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.cc/pify?keyword=world+latte+art+championship+score+sheets. Additionally, it exhibits characteristics of a link farm, embedding a large number of external PDF links, many of which are hosted on Shopify. The ML classifier strongly indicated maliciousness, and the document body, though corrupted, contains references to URLs and document metadata consistent with a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/pify?keyword=world+latte+art+championship+score+sheets
    • http://files.stjohnsnorthversailles.com/uploads/1/3/1/3/131379510/pavixozufise.pdf
    • http://files.matthewwilliamguerra.com/uploads/1/3/1/0/131070597/tebozavitunum.pdf
    • http://files.allisonwonderlandc.com/uploads/1/3/0/9/130969735/5d7bca9fdd0457.pdf
    • http://files.penny-funeralcelebrant.co.uk/uploads/1/3/1/4/131414134/jabuxokabolun.pdf
    • http://files.kimseppala.com/uploads/1/3/2/6/132696274/6240215.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/photodetector_applications.pdf
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/jfc_urban_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0433/3230/5054/files/binubipape.pdf
    • https://cdn.shopify.com/s/files/1/0436/8387/2921/files/yamaha_48_volt_charger.pdf
    • https://cdn.shopify.com/s/files/1/0431/5784/8224/files/kuwigafumigusovawem.pdf
    • https://cdn.shopify.com/s/files/1/0435/4909/8148/files/wemokevozavutupadogif.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/30282857092.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/arresting_citizenship.pdf
    • https://cdn.shopify.com/s/files/1/0427/7963/9967/files/poxeneg.pdf
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/gulapor.pdf
    • https://cdn.shopify.com/s/files/1/0440/5719/8757/files/fajela.pdf
    • https://cdn.shopify.com/s/files/1/0428/8764/3302/files/wovubime.pdf
    • https://cdn.shopify.com/s/files/1/0447/4263/9765/files/weefim_assessment_form.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000611e.bin
965f07262e854f680c9cb30bf218323554955f4e8af96f8b2d72eca6f19a9611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x611E 5324 bytes
font_01_sfnt_off0000731e.bin
835e82c2d18a8ee7e29a8ba953364faa72677fcc72ae54705b5e3f5785f2c6d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x731E 10096 bytes

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