Malicious PDF — malware analysis report

Static analysis result for SHA-256 b05936f6f38af407…

MALICIOUS

PDF

53.1 KB Created: 2020-08-30 01:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d22fed0e63fdb3853a6a681f1b53115 SHA-1: 68da24b7dcca64aa57dd3373e1dc191a60d43b60 SHA-256: b05936f6f38af407dccb11d141f0e42b8f83757a354a54044708e19461c5aac1
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, https://ttraff.cc/wix?keyword=sure+cuts+alot+2+download, is likely intended to lead the user to a malicious site. The PDF also contains a large number of external links, many hosted on Shopify, which is flagged as a link farm. The primary purpose appears to be social engineering through a deceptive download lure.

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=sure+cuts+alot+2+download
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/most_fun_zodiac_sign_yahoo_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/rudixupe.pdf
    • https://cdn.shopify.com/s/files/1/0463/2690/7035/files/oracle_sql_injection_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0440/7564/7128/files/idsa_bacteremia_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/14903015987.pdf
    • https://cdn.shopify.com/s/files/1/0435/8032/6051/files/97006858362.pdf
    • https://cdn.shopify.com/s/files/1/0433/8502/8758/files/jowuzipezofugopopomidat.pdf
    • https://cdn.shopify.com/s/files/1/0433/5996/1239/files/12069475313.pdf
    • https://static.usrfiles.com/ugd/43d598_3abc2ba4d4b34784878465146e41d928.pdf
    • https://static.usrfiles.com/ugd/34e21e_5cb03066e43c44b491c0f8cb2e6f3b8e.pdf
    • https://static.usrfiles.com/ugd/c1108c_ae5a4a5e5a00424992855610ecb41a5e.pdf
    • https://static.usrfiles.com/ugd/39cb9d_dc60083837cc40878202bb8f088a1608.pdf
    • https://static.usrfiles.com/ugd/097bd5_18a0681448904058b753dd758f986c6d.pdf
    • https://static.usrfiles.com/ugd/9219f8_02f66d12e10440799012008c9ba155dc.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_off00009099.bin
5ddd7b3c6d7c8c738cb0cea21e6a8f818b643cfe067743ca856a3c0d8204db31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9099 5260 bytes
font_01_sfnt_off0000a293.bin
947613c963211163c3b18e7091143bee630abc88ace515a3ef0ae526941bcf42		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA293 10816 bytes

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