Malicious PDF — malware analysis report

Static analysis result for SHA-256 053940667afda37f…

MALICIOUS

PDF

34.8 KB Created: 2020-08-29 22:07:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bd21b68507f99129026b2a6d33bf4fb SHA-1: 79a923edc95c1e2b9285f508567b5ea626fedb70 SHA-256: 053940667afda37f543b6fa00daecf30557602c2e99a2e72551562df1c9910a1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, including a primary link to 'ttraff.cc' which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'eternal sunshine of the spotless mind online free movie', suggesting a lure to entice users to click the malicious link. The ML classifier strongly indicates maliciousness, and the presence of numerous external links points to a link farm or redirection strategy.

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.cc/wix?keyword=eternal+sunshine+of+the+spotless+mind+online+free+movie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_e023013883454fd4b69c07d462d57702.pdf
    • https://static.usrfiles.com/ugd/b8c837_e77ac6e23bbe420dbf74ac012ce76e96.pdf
    • https://static.usrfiles.com/ugd/b8c837_79014978337143ef8aa256f3ebac420b.pdf
    • https://static.usrfiles.com/ugd/5de1df_efd92f66f32f4b67a92cd697c4f9d0c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_286d42d3721b4a818ad156a9620b876c.pdf
    • https://static.usrfiles.com/ugd/b8c837_110147b973d3491b885b5105fb3fb8b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_69e20a1d1aea413787fa56d59f10374c.pdf
    • https://static.usrfiles.com/ugd/b8c837_237d3ab74ea845c88c79e92779e2444f.pdf
    • https://static.usrfiles.com/ugd/b8c837_85da2e815a04463ca0461b7aa322d485.pdf
    • https://static.usrfiles.com/ugd/bfbc46_eb1677241c7d4bd9852cf82c478b9119.pdf
    • https://cdn.shopify.com/s/files/1/0440/9052/3813/files/sony_video_player_android_tv.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0955/files/suzekedofaxen.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047f7.bin
1fbe72c5d2973d70ab309ad0cd48c54359efaffb30bf01096b96781db40eaebf
pdf-font-stream PDF embedded font (sfnt) at offset 0x47F7 5300 bytes
font_01_sfnt_off000059d6.bin
2fed49627e656e34757b9294a646720979bd85b06f27dc18ef2875eae365c158
pdf-font-stream PDF embedded font (sfnt) at offset 0x59D6 10056 bytes