Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2d1c34fa26ea991…

MALICIOUS

PDF

42.3 KB Created: 2020-08-30 20:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d719767334cf52886b286142ce644e4 SHA-1: 54a0479a0219429aca2d549cfc5e375aa5ff14fd SHA-256: b2d1c34fa26ea99137df58a5403f9bd6b538bfcfc394282503160ea72dc0d3da
152 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the same suspicious URL. The presence of a large number of external links, many pointing to a dominant host, suggests a link farm or SEO poisoning attempt, likely to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/wix?keyword=behavior+in+organizations+jerald+gre
    • https://static.usrfiles.com/ugd/b8c837_1c6863ba88144bb3a23b51bf74ff5727.pdf
    • https://static.usrfiles.com/ugd/9904c2_71854b800c7f475e8adef000e70bf821.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_a1359c8c49764cdfadced49ae629068c.pdf
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/93589336949.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fc9a486b9604967a546ce3f8cd15726.pdf
    • https://static.usrfiles.com/ugd/b8c837_65ba19cc409b49969ad9f29e2f418f0b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f4facdf0aea4479bc4ce678d697843d.pdf
    • https://static.usrfiles.com/ugd/bf650e_a23cfd0858f449d7be2954ad0fd645a7.pdf
    • https://cdn.shopify.com/s/files/1/0451/1324/5848/files/php_file_uploading_script.pdf
    • https://cdn.shopify.com/s/files/1/0437/7713/0647/files/no_doubt_underneath_it_all.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/fazug.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_off00006718.bin
07ddb649f281af4495da6a231231285e2e6586b0144d958973a2792b42c3db51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6718 5324 bytes
font_01_sfnt_off0000793e.bin
869570e4f144462958d26ba9ede1b79fa436164e95c7438adb16acde384e1311		 pdf-font-stream PDF embedded font (sfnt) at offset 0x793E 10448 bytes

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