Malicious PDF — malware analysis report

Static analysis result for SHA-256 73510d60936c8780…

MALICIOUS

PDF

49.1 KB Created: 2020-08-07 23:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae3533d5d39146b1174d6d85fbe4abaf SHA-1: c1c6c03df2d891c23c6837905333b6f8a55fabe3 SHA-256: 73510d60936c878041d669e590e3ea948a5d7ff13d2a88737f0d77f15e7b0601
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=certificat+de+cession+de+vehicule+prefecture+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to vehicle transfer certificates and includes this malicious URL, suggesting a phishing or redirection attempt. The presence of numerous other PDF links also indicates a link farm, likely for SEO manipulation or to host further malicious content.

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=certificat+de+cession+de+vehicule+prefecture+pdf
    • http://files.myworklifeharmony.com/uploads/1/3/2/7/132740264/piladowori_kumid_doxalimero.pdf
    • http://files.sculpey.com.au/uploads/1/3/2/6/132681452/gonomutovemow.pdf
    • http://files.wildharehome.com/uploads/1/3/0/8/130874257/722e90e6e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/0134/0319/files/rivuki.pdf
    • https://cdn.shopify.com/s/files/1/0429/1959/2099/files/ford_8n_pertronix_electronic_ignition.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/46191936245.pdf
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/household_gold_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/the_carter_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2103/files/webbie_savage_life_3_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/nurum.pdf
    • https://cdn.shopify.com/s/files/1/0431/4975/4519/files/tigorofiden.pdf
    • https://cdn.shopify.com/s/files/1/0428/2515/4716/files/memudezijewilono.pdf
    • https://cdn.shopify.com/s/files/1/0433/4940/9950/files/puwekopi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/95765016315.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_off00007e0a.bin
ab2f670b1d7bc9f1941fc7a6b9bab03d0b6830204c83dda44c4ec61e08c98472
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0A 5208 bytes
font_01_sfnt_off00008fc4.bin
cba196b5785be82d173fdc6b46559af7529a77760bcaecbf29351e807ea6fe51
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC4 12120 bytes