Malicious PDF — malware analysis report

Static analysis result for SHA-256 32defc6e1607177c…

MALICIOUS

PDF

40.9 KB Created: 2020-08-06 05:36:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6de9a695c3c2df1da48e0437593b868f SHA-1: 826dde2871caf91381826999c3ba0f1c77d16106 SHA-256: 32defc6e1607177cf72ffd18e0258a630e2924e069e081f5921deae66e295016
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying it as a PDF link farm. One of the primary links, 'https://ttraff.com/pify?keyword=accessible+tables+in+pdf', is flagged as a malicious redirector. This suggests the document's purpose is to lure users to malicious sites. The document body, though heavily obfuscated, contains references to the primary malicious URL and benign-looking PDF filenames, reinforcing the link farm tactic.

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=accessible+tables+in+pdf
    • http://files.tarifgo.de/uploads/1/3/0/8/130813364/041e987b0d.pdf
    • http://files.josephpyfferoen.com/uploads/1/3/1/3/131398242/4877692.pdf
    • http://files.emilykirchermorris.com/uploads/1/3/1/4/131407530/defemu-wokasofake.pdf
    • http://files.hivhope.net/uploads/1/3/1/4/131438111/4860980.pdf
    • http://files.erinrfreeman.com/uploads/1/3/0/7/130775734/jikekeduxuvafebewiga.pdf
    • https://cdn.shopify.com/s/files/1/0437/5560/2078/files/ruped.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/homelite_weed_eater.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6863/files/fapigeze.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/kenabur.pdf
    • https://cdn.shopify.com/s/files/1/0431/9009/1940/files/jevurepuwatoge.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/ccna_study_guide_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7720/6178/files/vupedudusovupoxat.pdf
    • https://cdn.shopify.com/s/files/1/0432/3799/8754/files/sisopomutowikos.pdf
    • https://cdn.shopify.com/s/files/1/0432/4750/1474/files/15194601541.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/47855582290.pdf
    • https://cdn.shopify.com/s/files/1/0446/6117/8521/files/chipotle_fax_order_form_2017.pdf
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/momikufebowuzuwewu.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_off00005c05.bin
d0c9132757c00285334e9b2f817cd2d89f292ebf7902a610572760138b7d57f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C05 5184 bytes
font_01_sfnt_off00006dc1.bin
b0337585c4791804a2cadb08872637b881271d5c17d5074669225d2cdef9618a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC1 13128 bytes

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