Malicious PDF — malware analysis report

Static analysis result for SHA-256 2566ed07e6c97f4f…

MALICIOUS

PDF

54.1 KB Created: 2020-08-05 14:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bd6e5f18a30a221c12077adc45d5d63 SHA-1: f68985fb3207a1689b1792dea9d4782610e230a2 SHA-256: 2566ed07e6c97f4fd7eba5923fb30a74048c88e6551d7f097319712129e2c9e5
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to known malicious infrastructure, disguised as a salary slip. The heuristic firings indicate that the PDF is a malicious redirector and part of a link farm. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=bulletin+de+salaire+vierge+pdf+2020', is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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=bulletin+de+salaire+vierge+pdf+2020
    • http://siwajanas.apzone1.com/uploads/1/3/1/4/131406149/927291cf61ac19.pdf
    • http://files.rockynazarene.com/uploads/1/3/1/8/131856331/783cd0.pdf
    • http://files.albertaorff.ca/uploads/1/3/1/0/131069860/patokaretel.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/86525235291.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pelezegagujagemubejapo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5000/0791/files/lamovoreridufibor.pdf
    • https://cdn.shopify.com/s/files/1/0429/7362/6524/files/vutegofiv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bekikelazipilexujewa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8453/files/nojiza.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/85693389681.pdf
    • https://cdn.shopify.com/s/files/1/0439/0292/7003/files/maziboxunefibutu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1271/files/jiluvolilubigezatiwat.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/71578712462.pdf
    • https://cdn.shopify.com/s/files/1/0448/7122/1410/files/renina_angiotensina_aldosterona_fisiologia.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007901.bin
40282ee5df93ac0916e84bc7f2dc6eec5daefaf2c661695fe0d6f631248eba56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7901 5592 bytes
font_01_sfnt_off00008c2b.bin
aacfd5bf160496a7b0ef2637a0df2628d1d5f400c76840450c7dbe17938ffedb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2B 12600 bytes
font_02_sfnt_off0000b447.bin
560e11d5da3ed60647d844d0127c34f4fbbc0b68999cbe35161ddcd790341c9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB447 16208 bytes

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