Malicious PDF — malware analysis report

Static analysis result for SHA-256 9daed4bb00c2cd3a…

MALICIOUS

PDF

35.9 KB Created: 2020-08-05 04:19:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 421f6bbc4c55cc588b489956979bc6ac SHA-1: f5ff6e8ec235e1b643238432b8c5441a74b3eb49 SHA-256: 9daed4bb00c2cd3ab2fb4a9b5d226409fd3eb2d0699ae8f9bc8b6c2a1546fb41
120 Risk Score

Malware Insights

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

The PDF contains a mass link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This suggests the PDF is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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.com/pify?keyword=anesthesia+and+analgesia+in+laboratory+animals+pdf
    • http://files.seandunlopdesign.com/uploads/1/3/1/1/131164067/1d5e803.pdf
    • http://bejulaxo.htrsusa.com/uploads/1/3/0/8/130874633/2223541.pdf
    • http://files.peterrichardsart.com/uploads/1/3/0/7/130740112/c861a7317e.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/potiwabuvufepatene.pdf
    • https://cdn.shopify.com/s/files/1/0431/4156/2522/files/74473424165.pdf
    • https://cdn.shopify.com/s/files/1/0434/6701/4297/files/ibps_bank_exam_materials.pdf
    • https://cdn.shopify.com/s/files/1/0429/6019/1641/files/jijuj.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/10773258603.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/motiwifididoxurugeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/brothers_karamazov_penguin.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/nosolotubaseboxexajatof.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/pigiterevimazagawalazaluv.pdf
    • https://cdn.shopify.com/s/files/1/0437/1624/7703/files/22602982107.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_off00004c68.bin
0f8868f798ec53565d09628f81ecf3d10d46d2b8b06241d1867072f86c8148de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C68 5688 bytes
font_01_sfnt_off00005f9e.bin
feb508d63014da1ade12fe3bec235f84e383ed37217dee251e3e953955fb2e5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9E 10264 bytes

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