Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dc7dc1d337014f0…

MALICIOUS

PDF

54.1 KB Created: 2020-07-30 18:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7547f36c4592eee7aa1fe291a46e2ea1 SHA-1: 69d2403ce9dfe2539c3db4d708f7a374c35af44d SHA-256: 7dc7dc1d337014f01ec3f09fd0f271a4f4d2f5ee1d7d554a2432065fcbc428a7
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=corporate+dress+code+policy+pdf'. Additionally, it exhibits a PDF link farm heuristic, with numerous external PDF links, the first of which is 'https://cdn.shopify.com/s/files/1/0433/0697/5382/files/zewukofo.pdf'. The document body, though heavily obfuscated, appears to contain text related to a corporate dress code policy, suggesting a lure for phishing or malware delivery.

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=corporate+dress+code+policy+pdf
    • http://files.linguisticfoundations.com/uploads/1/3/0/8/130814596/belemaxumajabinuj.pdf
    • http://files.pmte.ca/uploads/1/3/0/7/130775856/dosegaviduduva_rekexofijoxolat_dijafib.pdf
    • http://files.movedurham.org/uploads/1/3/0/7/130776326/sobizigisojis.pdf
    • http://files.itsjust700.com/uploads/1/3/2/6/132695994/fakaxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/zewukofo.pdf
    • https://cdn.shopify.com/s/files/1/0433/3607/3366/files/26355648656.pdf
    • https://cdn.shopify.com/s/files/1/0433/4636/2523/files/6531036065.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/49349816986.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/1749432591.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/ruzoboguw.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/33691336650.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/buxuzixozaviwogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/surofizedixupipusibira.pdf
    • https://cdn.shopify.com/s/files/1/0435/2675/0359/files/zurijewiti.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/52698941568.pdf
    • https://cdn.shopify.com/s/files/1/0430/0711/5423/files/giradurididafid.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/44132236018.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_off00009811.bin
7580767ce537db0faa82cf11eae980fc0a0308265d575adb72b4f21ee32ae41d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9811 4956 bytes
font_01_sfnt_off0000a90d.bin
562ae89b31aaf97fba88fb75631d1b5f7aa8ba9a886a80ab3555cca07f47a265		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA90D 9864 bytes

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