Malicious PDF — malware analysis report

Static analysis result for SHA-256 40f82651e2952c4d…

MALICIOUS

PDF

40.0 KB Created: 2020-08-06 17:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 289426b08b464d5947e76a4552f3a651 SHA-1: 2f9f72e6573e5be4eace7d3a38a47b08bab24a29 SHA-256: 40f82651e2952c4db98c0f4fbea84c5afa168887dfd8d5b7db7113c1b563965a
154 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 redirector service (ttraff.cc) that is known to host malicious content. The document body, though heavily obfuscated, also contains the URL https://ttraff.cc/pify?keyword=bogota+turismo+pdf, indicating a lure to a potentially malicious site. The presence of numerous Shopify-hosted PDFs suggests an attempt to blend in with legitimate content while directing users to malicious infrastructure.

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=bogota+turismo+pdf
    • http://files.europeanmatchracetour.com/uploads/1/3/2/6/132682745/6515867.pdf
    • http://diwolago.raemiz.com/uploads/1/3/1/6/131636655/romutid-rikamafat-nipuwu-xeridiluzuxikix.pdf
    • http://files.weyemilab.com/uploads/1/3/1/3/131381369/3761510.pdf
    • http://files.poetryandmemory.com/uploads/1/3/1/0/131069824/3888713.pdf
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/3084605657.pdf
    • https://cdn.shopify.com/s/files/1/0432/2033/6802/files/16835219890.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/maternity_leave_letter_to_parents.pdf
    • https://cdn.shopify.com/s/files/1/0433/3253/4440/files/49602433567.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/60306389428.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/ssbu_tournament_legal_stages.pdf
    • https://cdn.shopify.com/s/files/1/0436/3167/3502/files/reliability_and_validity_assessment.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/piwetoluwixituxunufakisul.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/earthquake_resistant_design_of_rcc_structures.pdf
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/3ds_emulator_bios.pdf
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/rilidamedumutifex.pdf
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/savozewefipuseniju.pdf
    • https://cdn.shopify.com/s/files/1/0436/7712/2713/files/24144239650.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_off00005d0d.bin
2c8cdc4eca029d75a9ad6dc1b81430e39a5f7e60e9847d3d9273d0898dcab824		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0D 5380 bytes
font_01_sfnt_off00006f45.bin
98696e8ea0b0fb4618aaefc13e108641309dc5a911c59ec53776b82711215f84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F45 10700 bytes

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