Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b0f6f2f7ec5c489…

MALICIOUS

PDF

51.4 KB Created: 2020-07-31 05:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 22e4df76b61a18b80446179a0f988af0 SHA-1: b45a542055bd2bda4b0854ebb03ad294273be81c SHA-256: 6b0f6f2f7ec5c489d81dc170eaa1d28280807a09e03b4be3e9cefdd2c12a19bb
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources. One of the primary links, 'https://ttraff.ru/pify?keyword=botones+gustativos+pdf', is identified as a malicious redirector. The document's structure and the presence of numerous links suggest a link-farming or redirection tactic to lead users to malicious sites. No scripts were extracted, but the PDF structure itself is used to host and present these links.

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=botones+gustativos+pdf
    • http://files.bonvivantgourmets.com/uploads/1/3/1/4/131452935/8320689.pdf
    • http://files.aicheuci.com/uploads/1/3/0/9/130969306/nakufilufap_kerojoriju.pdf
    • http://files.markyspartyrentals.com/uploads/1/3/0/7/130738719/6138785.pdf
    • http://files.gamechangernd.com/uploads/1/3/1/6/131606353/ximebumanuv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3156/8290/files/sifomilogimixirajarodaxew.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6423/files/ridumivuru.pdf
    • https://cdn.shopify.com/s/files/1/0432/1230/8637/files/pinezexumuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/sufafafaxadafuloji.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/sadoxamiweb.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/44599734087.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/mefivi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5007/2224/files/bezux.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/30016889351.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9651/files/vuzameluriguwijodotopono.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/juvajubovemesukaputupu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6630/8246/files/gitajulutis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5592/2856/files/nixokewuwudafob.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_off00008a2e.bin
2400c736c7b3825ccff9abd2217ab2da276e9a1ab69cee22ddcc59d92760d741		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2E 5072 bytes
font_01_sfnt_off00009b93.bin
7074148ad47675dbdf764b215c34a26eb14a628799b4eb55e4d5ba65e0d54944		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B93 10756 bytes

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