Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eb694a5dc9d06d6…

MALICIOUS

PDF

40.4 KB Created: 2020-08-06 03:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 189a25b325cd2508e52e8b4c9b299af8 SHA-1: f46f629ec3b7c68d8198872ce628c671992c866e SHA-256: 9eb694a5dc9d06d694c3eab76f5d041256acd0938daf8805cf8aa1f0ff756ced
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests the document is designed to funnel users through a chain of redirects, likely to a malicious site or for SEO manipulation. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=episiotomy+care+procedure+pdf
    • http://files.panthercreekptsa.org/uploads/1/3/0/7/130776536/dd1532fa8a.pdf
    • http://files.nancysniftynotes.com/uploads/1/3/0/7/130775277/9649648.pdf
    • http://files.quantumtunneling.net/uploads/1/3/2/7/132710763/jagumimukesavedogi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9391/6837/files/pozalutoligefuralusodi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/83437907348.pdf
    • https://cdn.shopify.com/s/files/1/0433/8542/1978/files/baking_soda_health_benefits.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sogogetuxupoxex.pdf
    • https://cdn.shopify.com/s/files/1/0430/9549/0721/files/pijobiraviwesuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1293/files/gepaj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3071/5288/files/62034118798.pdf
    • https://cdn.shopify.com/s/files/1/0429/3787/6639/files/261730696.pdf
    • https://cdn.shopify.com/s/files/1/0433/4678/8502/files/pimijogiver.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/rinex.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_off00006062.bin
fec04fbde320de0419cfb054e88c9954242a7484b01f70b1f8e98d7fc9223bc6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6062 5328 bytes
font_01_sfnt_off00007276.bin
4aa992f882231fae4c75390bde9e9820da67c7c67ee58a3c105d0ee097b264c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7276 10304 bytes