Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed0c48fb6ff179af…

MALICIOUS

PDF

40.2 KB Created: 2020-08-17 09:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9adab3e8f25a315d71326da285561e01 SHA-1: 564700c4ae950f762f780837a3f0f7b805bd64c3 SHA-256: ed0c48fb6ff179af91cd6943f304d328196a53084609332d949bb688945fcc2f
150 Risk Score

Malware Insights

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

The PDF contains a large number of links to other PDFs hosted on Shopify, a technique often used for SEO poisoning or to obscure malicious activity. One of these links, 'https://ttraff.cc/pify?keyword=self+excited+dc+shunt+generator+lab+report', is identified as a malicious redirector. This suggests the document is designed to lure users into clicking malicious links, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=self+excited+dc+shunt+generator+lab+report
    • http://files.clarerodandgunclub.com/uploads/1/3/1/6/131607522/8a48b35.pdf
    • https://cdn.shopify.com/s/files/1/0430/1442/2687/files/41723297706.pdf
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/82362637164.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/print_envelopes_from_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/74624106495.pdf
    • https://cdn.shopify.com/s/files/1/0432/7351/9272/files/79202619235.pdf
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/neluvekulijugatafojunufiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/95119738213.pdf
    • https://cdn.shopify.com/s/files/1/0431/0751/6578/files/pupitomimoguwegetojuzeko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/biodegradable_plastics_and_polymers.pdf
    • https://cdn.shopify.com/s/files/1/0440/8072/6168/files/arjuna_award_winners_list_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6758/8252/files/budim.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_off00005e37.bin
9af21bc4e3cc583b22d826af4c4febf6f38dd9aae655ba52f82a89cf560b56a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E37 5728 bytes
font_01_sfnt_off000071a2.bin
e7d6ee3a04a903c9e37596dec42c9dbbcc4a43cbb57c72f7e413e0f6babf25b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71A2 10080 bytes

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