Malicious PDF — malware analysis report

Static analysis result for SHA-256 414cbf6d05153804…

MALICIOUS

PDF

45.6 KB Created: 2020-08-14 13:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e639d8a26910cb9193b76344f418872 SHA-1: f8531c14bdc9ad50ec74e0e2d35fe6dd804a5472 SHA-256: 414cbf6d0515380456768ab75881e5178f9f75b598226506409b53ab6aabf28d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links redirects to a known malicious domain (ttraff.ru). This suggests a phishing or malicious redirection attempt, likely to lure users to a compromised site. No scripts were extracted, and the document body is heavily obfuscated, limiting further analysis of the exact payload.

Heuristics 3

  • 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.
  • 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=formel+anhalteweg+gefahrenbremsung
    • http://beferexi.careerscentralvictoria.com/uploads/1/3/1/4/131452883/284198.pdf
    • http://files.welcomehomeveteransusa.org/uploads/1/3/1/4/131438018/9a0e2941.pdf
    • http://files.azerothmillionaire.com/uploads/1/3/2/7/132710627/sikolej.pdf
    • http://zoriv.stephenhowardharrison.com/uploads/1/3/0/7/130738684/7600128.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/25248519923.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81667611697.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/fegeli.pdf
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/58039930469.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/anton_lavey_books.pdf
    • https://cdn.shopify.com/s/files/1/0438/3876/7266/files/75861435261.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/braille_alphabet_deutsch.pdf
    • https://cdn.shopify.com/s/files/1/0431/1177/6416/files/nozanupebora.pdf
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/windows_xp_iso_32_bit.pdf
    • https://cdn.shopify.com/s/files/1/0434/6976/6821/files/61483648258.pdf
    • https://cdn.shopify.com/s/files/1/0428/7650/2175/files/baixar_aplicativo_para_androide.pdf
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/tulekogaler.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_off00007200.bin
8c2ef29d954d120b4f5daf3df3d9016563be32c7a16a0a84ab9f15e6aac59bbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7200 5368 bytes
font_01_sfnt_off00008428.bin
3915bfa4ffc5cdb45367e1dd08759ca05cbc10a0bc31c3c63808bead7dd571c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8428 10688 bytes

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