Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1262fe4d529db2…

MALICIOUS

PDF

71.4 KB Created: 2020-09-09 08:06:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c403a076c572bafd879be52231ce4b71 SHA-1: 5c641e1bd884b0cf6ca09e72f53a4e3dcf508c6f SHA-256: df1262fe4d529db283f10d48b3a862f6feddbc6273b93ccc1c56836488dac268
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'crafting guide' and a URL that appears to be part of a link farm designed to improve search engine ranking for malicious content. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be directing users to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=divinity+original+sin+crafting+guide+enhanced+edition
    • https://static.usrfiles.com/ugd/f34323_001b59a30981408e962e8c6ff4407a61.pdf
    • https://static.usrfiles.com/ugd/704f6c_68b6aea9291943e5a426f18591dddd7c.pdf
    • https://static.usrfiles.com/ugd/61804c_31cde8a086db472aba9d2de226528fc5.pdf
    • https://static.usrfiles.com/ugd/a18aa6_36d0a404d7b3493ba9fa63a4850a3735.pdf
    • https://static.usrfiles.com/ugd/decf6f_195374212e4345938a45ad06a1bad98c.pdf
    • https://cdn.shopify.com/s/files/1/0434/6609/6806/files/kemejipukesowewipi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/mamutubewilobo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1428/1625/files/best_cold_sales_email_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/86292278436.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/kejowopete.pdf
    • https://static.usrfiles.com/ugd/221eaa_cc87166976d4401aa2c76e3a0d393c28.pdf
    • https://static.usrfiles.com/ugd/b8c837_78309560db1647f0b27ad2fabc2e080a.pdf
    • https://static.usrfiles.com/ugd/7c30af_39f90794922f4d58a22f4ae2fc72f6ca.pdf
    • https://static.usrfiles.com/ugd/4cf28d_b54a294e243b4c52a0f84c260ff4d998.pdf
    • https://static.usrfiles.com/ugd/e4f6f0_27249543103b42e88ad3f25c72790c6e.pdf
    • https://static.usrfiles.com/ugd/6f58fb_be79fa0352ac401e9ada935e30ca4c85.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_off0000cd0a.bin
bdf6efdafdc6e0b9fc9931fe70442c1ef57f965d6685af236d28aa7b2033d5d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0A 5444 bytes
font_01_sfnt_off0000df9f.bin
efc076440b3afe186dfb43acc35af5f2e839cb37b65536ff3d9915edd487ca60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9F 15968 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.