Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec7db9e1db76c753…

MALICIOUS

PDF

39.6 KB Created: 2020-08-25 09:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a87464d70ba82a672a165ef030e2fd4 SHA-1: f66443335c8b5a63fb94fcad83d697e3d6053035 SHA-256: ec7db9e1db76c7536340923cd520715b1b1acf67e7bb2f1c6049c90ca371b59a
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, suggesting a phishing or malware distribution attempt. The heuristic 'SE_INVOICE_LURE' indicates the document's content is designed to deceive the user into taking action. The primary malicious URL identified is https://ttraff.ru/pify?keyword=microsoft+access+for+pc+free, which likely leads to further malicious content. No scripts were extracted from this sample.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=microsoft+access+for+pc+free
    • http://birikiz.stuffsarahsays.com/uploads/1/3/0/8/130814297/8833289.pdf
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/wusonasagabipuwavowenomu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3062/files/metenagiwaderosa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1413/4692/files/modality_in_linguistics.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/persona_bergman_script.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/bellini_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdf
    • https://cdn.shopify.com/s/files/1/0436/5756/0217/files/trait_d_aix_la_chapelle_2020.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_off00005e94.bin
a3d675c6d110ba42a602ed784af6ab0c586cd176c3c38cbedd697eeb6277a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E94 4984 bytes
font_01_sfnt_off00006f98.bin
c3c9388c205a1901b03aa02f06ac27ebd05b2a903b0d87a9ce8511ce32feb272		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F98 10012 bytes

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