Malicious PDF — malware analysis report

Static analysis result for SHA-256 a983f56b0e20c567…

MALICIOUS

PDF

36.8 KB Created: 2020-08-13 19:36:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84b385d18c9d5ad5e0b076fcad343ddd SHA-1: 988da2bee99d0f7568eea6155a6958086bef017d SHA-256: a983f56b0e20c567ad092d9e6d596602af42878115b4b5c23d7b264d231c2675
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, traff.cc, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector, suggesting a phishing or scam attempt to direct users to malicious content. No scripts were extracted from this sample.

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.cc/wb?keyword=computer%20systems%20performance%20evaluation%20and%20prediction%20pdf
    • http://dunileb.jrsigningservices.com/uploads/1/3/1/3/131382243/favadeta_tajuxazamubet_dikusajorif_zifibusanofi.pdf
    • http://files.drjaygrossman.com/uploads/1/3/1/4/131453588/marivawilerumo_radiletifef_sofukat.pdf
    • http://files.kaelynschmidtdesign.com/uploads/1/3/2/7/132712282/2725546.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/pirisopowoxikububezosuj.pdf
    • https://cdn.shopify.com/s/files/1/0439/4500/1115/files/soundcloud_converter_to_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/ansys_fluent_documentation.pdf
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/75591358897.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/94380646429.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/gapusovovunonunaka.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/zigeperiketal.pdf
    • https://cdn.shopify.com/s/files/1/0431/4143/1464/files/76962383561.pdf
    • https://cdn.shopify.com/s/files/1/0438/1910/6466/files/dizirujupilasazu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/angielski_b2_podrcznik.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/31072742869.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_off00004eff.bin
7e76f80b307f8ad4063f840fc66f91904ee06bd7a343a4509270b9a69c5803e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EFF 5368 bytes
font_01_sfnt_off00006136.bin
745b16d4ace81d141a0a576ea8323c0afd86f7c0d74a4fa20cb1047b4525ac83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6136 11112 bytes

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