Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebbb5953d9569929…

MALICIOUS

PDF

45.0 KB Created: 2020-08-04 15:05:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 558cb20d7acf1962f15a804244f1f3a9 SHA-1: 5f5c3274166b088b535d7e1aab014975c3ac12c6 SHA-256: ebbb5953d9569929d166eca772cb287867e488ad2ea872c85225a4f5bf6e32ed
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The primary malicious URL is https://ttraff.cc/pify?keyword=what+is+working+capital+management+pdf. The document body is heavily obfuscated and contains embedded URLs, suggesting a lure to external content. The presence of numerous shopify.com links, while many are confirmed benign, is part of a link farm strategy to obscure the malicious redirector.

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=what+is+working+capital+management+pdf
    • http://files.attitudedancecompany.com/uploads/1/3/2/7/132740281/muwevedubakikadom.pdf
    • http://files.sunflowergenetics.com/uploads/1/3/1/4/131413550/e14484bb46d6.pdf
    • http://files.bhamcommunityacupuncture.com/uploads/1/3/0/7/130776327/cc67b95f7f.pdf
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/57954489664.pdf
    • https://cdn.shopify.com/s/files/1/0438/1078/3394/files/98024349152.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/33634704554.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/taselojewewixejenobesik.pdf
    • https://cdn.shopify.com/s/files/1/0436/5526/6457/files/articles_of_association_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/66698485210.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/oxygen_os_one_plus_one.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/35638201815.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/widizosatadusuzovasovodas.pdf
    • https://cdn.shopify.com/s/files/1/0433/5193/3078/files/81203748149.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/43785692940.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_off00007016.bin
4f6c71f3a8876699cfdead7b718687e86d423f28724b32afd0ff007ff3fb4ecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7016 5736 bytes
font_01_sfnt_off00008391.bin
81afa4327c30c4be6b8004a28e9de04647a187666c21896b5f52379601321e12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8391 10360 bytes

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