Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2bc3bb03e31d22d…

MALICIOUS

PDF

64.4 KB Created: 2020-08-06 01:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 935afc1a2958d43a8a44fa3d89a1dd48 SHA-1: c5add6ed7d3ba19db88c92c33ea83cbdb6eaf4fb SHA-256: f2bc3bb03e31d22d4950ee0eff80306ba16d78e0729c9f68b87e1c58aac83d60
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One critical heuristic indicates a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=cs+lewis+the+weight+of+glory+pdf', which is a strong indicator of malicious intent. The document body, though heavily obfuscated, contains references to the same URL, suggesting it's the primary lure. The presence of numerous Shopify links, while many are benign, contributes to the overall deceptive nature of the document.

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.ru/pify?keyword=cs+lewis+the+weight+of+glory+pdf
    • http://files.bedwasselfstorage.co.uk/uploads/1/3/1/8/131871535/bulenejabu.pdf
    • http://files.thechristofbasingstoke.com/uploads/1/3/1/3/131381363/4edbf466.pdf
    • http://files.yournaturals.ca/uploads/1/3/0/7/130775220/8a9321030ed92.pdf
    • http://files.drbonniesocket.com/uploads/1/3/1/4/131407668/wivufomuvuw-sonumudoziru.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/vefekagisenuvetonilova.pdf
    • https://cdn.shopify.com/s/files/1/0433/9705/4631/files/matlab_else_if.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexivopagutufaxusezonav.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/liwenurake.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/17229302435.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/gajolokibosugasebowe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/36389817549.pdf
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/gukajazesegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5083/5876/files/lomosekexudez.pdf
    • https://cdn.shopify.com/s/files/1/0435/3628/5860/files/fakumab.pdf
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/mawutupetu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/33453789625.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_off0000bec4.bin
1479485e8c849cc409b1748cca8f75e4f6afcb5f103aaa9b7bff55ce84edc76d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC4 5192 bytes
font_01_sfnt_off0000d084.bin
3723196650778ed7d069633d8200dc60ee820c1ce3b00b07e1677c71523691bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD084 10516 bytes

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