Malicious PDF — malware analysis report

Static analysis result for SHA-256 05124baa82f470bb…

MALICIOUS

PDF

51.7 KB Created: 2020-08-29 20:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: beb0b7eafb75100f0215633c7bc9ad65 SHA-1: b8f57939de9df2e3f21b84c1cbad384e7ad1e744 SHA-256: 05124baa82f470bb59d8515b9dc6295c5c98cdedf7176f32338e8c7a93dad3e4
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.com. This indicates an attempt to redirect users to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a large number of links were generated, likely to manipulate search engine results or distribute phishing lures. While no scripts were directly extracted, the nature of the embedded links and the ML classification strongly suggest malicious intent.

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=simon+vs+the+homo+sapiens+agenda+sparknotes
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/cc10e7_4941f00020da4f5699d4bcdfe1fd332b.pdf
    • https://static.usrfiles.com/ugd/b8c837_63f930eeefe54607b2a09fbba739838f.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdf2f87b1ad24e158f538882c5727b89.pdf
    • https://static.usrfiles.com/ugd/b8c837_40d1519768de4423a4f0c07f2cd1766f.pdf
    • https://static.usrfiles.com/ugd/b8c837_bedd8e080bf247bbb2d10ff3f6795f97.pdf
    • https://cdn.shopify.com/s/files/1/0462/7808/2720/files/copy_paper_5000_sheets_canada.pdf
    • https://static.usrfiles.com/ugd/b8c837_ee79441fcde94d45a23488ab8aedfa4d.pdf
    • https://static.usrfiles.com/ugd/5b5da7_33413b3b750b4ead9ce2f38a615ee493.pdf
    • https://static.usrfiles.com/ugd/b8c837_a5dd74ee3ad4427f93df57699b33fe1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_dce09b174c1a4acfb51d3f1548940bbf.pdf
    • https://static.usrfiles.com/ugd/b8c837_aac5e23d58ae4d2b8f7d988aa512a163.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f71.bin
487b830e7c278d5f338c220f0f54d72eec61cbe3547ac56f8d09310a38477462		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F71 5356 bytes
font_01_sfnt_off0000916e.bin
d8055007e10de70ecd25d8e0943a41b139ef12d576827873f34c753357c96d4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x916E 10064 bytes
font_02_sfnt_off0000b3d6.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D6 4324 bytes

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