Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed4667625fead5e…

MALICIOUS

PDF

39.0 KB Created: 2020-08-31 14:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe6302f3d97cb474b3ce951fd0db1a12 SHA-1: 9a1a4badb7fea432282b32a9f33a59d167cba3af SHA-256: bed4667625fead5e241561af0d093df608293d256ad91f4a8fef30eec91fc873
120 Risk Score

Malware Insights

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

The PDF contains a link farm with 15 external links, including a redirector to a known malicious URL. The document body, though heavily obfuscated, contains the malicious URL. This indicates the document's primary purpose is to lure the user to malicious infrastructure.

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/wix?keyword=beautiful+liar+audio
    • https://static.usrfiles.com/ugd/b8c837_c69bc9f6b1d746459ab5fe9d771c4fa2.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a157940a3f544febec2083513d0072b.pdf
    • https://static.usrfiles.com/ugd/b8c837_a36c8583f62e4a5581e4a3c14d6868a1.pdf
    • https://static.usrfiles.com/ugd/bdeb4c_c489cd26fe1f4bddacccdf6d4b51c3dd.pdf
    • https://static.usrfiles.com/ugd/b8c837_784bfa14201d4a65a47962ecca116fc2.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_6af70bce4e7d43f6a424472fff9b6e49.pdf
    • https://static.usrfiles.com/ugd/6290de_10751455446c49efb149bf04c6f7ef57.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d82c79d688e4fb28c8073b1860b3c42.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/xidezofuxo.pdf
    • https://cdn.shopify.com/s/files/1/0452/3006/3773/files/23882668345.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/dictionary_pronunciation_guides.pdf
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/benzodiazepinas_anestesiologia.pdf
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/makagogotibizisosipobemum.pdf
    • https://static.usrfiles.com/ugd/f55bec_fa40825c5c1b4f55a158b1a3a9941b47.pdf
    • https://static.usrfiles.com/ugd/3cb679_7d8f80037cbc4bb787d5b4ac5b8f5092.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000522b.bin
a1ab41a22534b49c26dc7e95e9bc3a15fcb4673510a6027c9c34a550523bbcfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x522B 4772 bytes
font_01_sfnt_off0000626c.bin
4124f772d75de2e757d66273de45ab67d1472cce93aafc68bf24d7cdb8923c6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x626C 1964 bytes
font_02_sfnt_off00006bc5.bin
3a7428c786f5a074ccd3dc1882324f62a0ca36f9eeeddb0eda0d86cee6f64cdf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 10192 bytes

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