Malicious PDF — malware analysis report

Static analysis result for SHA-256 cded832886ff0e06…

MALICIOUS

PDF

39.9 KB Created: 2020-08-30 10:07:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ca80b3f33dadf8a8772ac533fe3a338 SHA-1: 46bbe69d788cf49eecc0dcf3a7a942b69b4652a7 SHA-256: cded832886ff0e065536e8111320aeeac59f6dcc8085f8b61e0250cabcfa1380
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, which is also present in the document body. The file also contains a large number of embedded URLs, many of which are benign, but the primary link points to a known malicious redirector. The document appears to be a lure, disguised as a search result for an academic paper, to entice users to click the malicious link.

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/wix?keyword=the+art+of+being+human+11th+edition+chapter+1
    • https://cdn.shopify.com/s/files/1/0437/8053/8529/files/linux_desktop_environments.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/83490343021.pdf
    • https://cdn.shopify.com/s/files/1/0437/2014/7093/files/80057032875.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f0d3d6ca38d4041bed68ad744c9a8c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_62918db86f814b9ab2c56ab61585f3c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7d1ee1b78a9442ca693c84e1bd26f27.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3c088c13cb04a428c58dfef8b604f5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_f26ee052378b49ab8788594b0c1bd47c.pdf
    • https://cdn.shopify.com/s/files/1/0460/7236/5220/files/annie_dillard_sight_into_insight.pdf
    • https://cdn.shopify.com/s/files/1/0464/3337/0264/files/84265828562.pdf
    • https://cdn.shopify.com/s/files/1/0437/1818/1013/files/ikea_white_queen_bed_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0441/3489/1672/files/gym_exercise_for_biceps_and_triceps.pdf
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/8281796818.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/65361563988.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/nadapusemed.pdf
    • https://cdn.shopify.com/s/files/1/0443/0875/8684/files/edison_report_lsi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/83048875562.pdf
    • https://cdn.shopify.com/s/files/1/0430/3382/1347/files/71445839105.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_off00005a47.bin
4b1c4f8535314a7f2926f3676f350cac732b1faba02ed8ab7fe9f2f2d52ef6ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A47 5500 bytes
font_01_sfnt_off00006cd9.bin
6913bc7f5822e23bba80de0be57b2214dce44397cf1a2453943f6af73a510547
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD9 11036 bytes