Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b7b0093ed729bc2…

MALICIOUS

PDF

53.7 KB Created: 2020-09-04 00:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34f6f585695a685e217f5a57b99f52dd SHA-1: 2eed91d2584acadd634b883b8df9cd01174c56ed SHA-256: 1b7b0093ed729bc20e6f5ba34bf8321bce9f4810a2aac8c0f7e9bff905ac13f5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, a common tactic for phishing or redirecting users to malicious sites. One of the extracted URLs, 'https://ttraff.link/wix?keyword=best+hollywood+robbery+movies+free', was flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to external content. The ML classifier also strongly indicated maliciousness.

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.link/wix?keyword=best+hollywood+robbery+movies+free
    • https://static.usrfiles.com/ugd/682d1c_9899772bf3ce49c0b65f43432cd1b064.pdf
    • https://static.usrfiles.com/ugd/5bb01c_741f6ead11344a74a285faa3d35dbd89.pdf
    • https://static.usrfiles.com/ugd/ecd213_58838024daa04cbd8466b844293ddf79.pdf
    • https://static.usrfiles.com/ugd/6cfc61_767b30237df347aea281f696b188e5eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_82ebb2b9cc4f49bcb732a2ef894610f3.pdf
    • https://static.usrfiles.com/ugd/e42c35_9c8289599f4b439598af99b59da3ea9a.pdf
    • https://cdn.shopify.com/s/files/1/0431/7167/6314/files/affix_hopping_transformation.pdf
    • https://cdn.shopify.com/s/files/1/0438/1730/4226/files/bevavu.pdf
    • https://static.usrfiles.com/ugd/35e1ce_07dc271bcebb4c10969ecf553ff8ee40.pdf
    • https://static.usrfiles.com/ugd/136d07_570e4135af9d4f61a1d55b67c7912df0.pdf
    • https://static.usrfiles.com/ugd/a0905b_498269ae64aa43a4b76268d5b8ac06f7.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_off000093fd.bin
b7172840f78b0824f85d9e80105d4cca08a0fa9f0c3c35bd142d80a7ad9bd07a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93FD 5380 bytes
font_01_sfnt_off0000a63f.bin
1194b44f750b72f6c9a088368dad4ab77ef5fe893aa756fe55767cfbe1636d54		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA63F 10508 bytes

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