Malicious PDF — malware analysis report

Static analysis result for SHA-256 02141490d12fcaa0…

MALICIOUS

PDF

43.9 KB Created: 2020-08-31 00:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5edb90fd6a398aecaede8710b800c51 SHA-1: a65cf8a30c0b9ff7baa573b4c7c53629f39ae070 SHA-256: 02141490d12fcaa0100587e294d5c587ccadc79a665febc06efe7a66043b59e7
154 Risk Score

Malware Insights

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

This PDF document contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL https://ttraff.com/wix?keyword=bertolt+brecht+baal+pdf. The document's structure and embedded links suggest an attempt to exploit users through deceptive redirection, likely for phishing or malware distribution. The ML classifier 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.com/wix?keyword=bertolt+brecht+baal+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4902/5690/files/38574726961.pdf
    • https://cdn.shopify.com/s/files/1/0438/1828/7266/files/xevanugenume.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3979/files/78256352958.pdf
    • https://static.usrfiles.com/ugd/b8c837_6058219135d1484896c822688aac2bcc.pdf
    • https://static.usrfiles.com/ugd/e3834b_19ce2ca0dc81492695d82ff3b2d5c176.pdf
    • https://static.usrfiles.com/ugd/430cb2_bb3084b944e44512837a9fbce29a197b.pdf
    • https://static.usrfiles.com/ugd/cac9e4_506b8bcbb2914847a4b28561379f19e8.pdf
    • https://static.usrfiles.com/ugd/09273f_5e6c4bb4b84a4c80a2142159aa66eeb7.pdf
    • https://static.usrfiles.com/ugd/cc14e4_4f4267e9cc474304aedfae925cd44d94.pdf
    • https://static.usrfiles.com/ugd/74a852_297b03a48e6f498e8f104fa9a87afc97.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc283fe0d4fc4000876c4c07f8aa93ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_59da4d82b3f7489ba22734dd22dd03bd.pdf
    • https://static.usrfiles.com/ugd/b8c837_98cd7f61adbf4dd3a33e90340b305af8.pdf
    • https://static.usrfiles.com/ugd/b8c837_39557059412d42bda1aebf6696bb70ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_fff4a1a33b414fc487634831813be6a9.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_off00006adf.bin
43cd3ea6e20f87376e511d42a0dc5e5e80d9be55734fd58957c7f8761831a087
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADF 5252 bytes
font_01_sfnt_off00007cb3.bin
194319c367dd655d96d23975f3e6f2a9b55ab504d991b797285e93b8204d252c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB3 11264 bytes