Malicious PDF — malware analysis report

Static analysis result for SHA-256 705267950d90d536…

MALICIOUS

PDF

60.0 KB Created: 2020-08-30 10:32:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f382aebd6ef88e6d87be14ffde586c62 SHA-1: d6dd9091cd9bc7350cc89302f1a6dc187af5f4fb SHA-256: 705267950d90d5360c3be2f1b34e937e7c1931f3ba2da0c2413e515b6488dbc6
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to host or redirect to further malicious content. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Eu4 best vassals' and the malicious URL itself. The presence of numerous external PDF links, many pointing to static.usrfiles.com, suggests a link farm or SEO poisoning attempt to drive traffic to the malicious redirector.

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=eu4+best+vassals
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_5129264138ab492bb13aa695d1ed9069.pdf
    • https://static.usrfiles.com/ugd/b8c837_efc3a2a58ac94b36bb8b3bdd4e5be681.pdf
    • https://static.usrfiles.com/ugd/bd5c68_5cdb9a1ffdba4cae9f5cd0a8e3e039b2.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_fdee29277b464bbeb09e3e1d6180fce6.pdf
    • https://static.usrfiles.com/ugd/b8c837_95d3cb5d56764b24be6e54d0e39ab094.pdf
    • https://static.usrfiles.com/ugd/585b1d_3635182ff25a4feea1aa617a0eb07594.pdf
    • https://static.usrfiles.com/ugd/b8c837_b7acab406c2143de8b869b3fdc374bf4.pdf
    • https://static.usrfiles.com/ugd/b8c837_72d4d373bbd24959b2e36528554b99ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6ded65ed64640508ddf66f5508659ab.pdf
    • https://static.usrfiles.com/ugd/91e123_8e5c4eff101c42fe94eae9b39f6de3d0.pdf
    • https://static.usrfiles.com/ugd/405339_5b12b3ee6cb4462f85c6d2529d752432.pdf
    • https://static.usrfiles.com/ugd/b8c837_15efeb427726487784f231101b4e8c43.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0c3c45da79249788ec0ee31b601bc21.pdf
    • https://static.usrfiles.com/ugd/0c41e7_71b784acffa1488fbb474907d3c6dacd.pdf
    • https://static.usrfiles.com/ugd/fe83c3_d6c3f15fb7fb45718eb25a3e56eb6145.pdf
    • https://static.usrfiles.com/ugd/b8c837_b2a7b9e453ab42369fa6184c26b403f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_42246c1f7e694986bcaaca0ab1f366a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f4fad99df694fcabbcc53da8f491fd4.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_off0000af22.bin
9dc7fb5a7c4c9393661f90a0b81a352d14a3988bdea3920a80773925f3d758bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF22 4828 bytes
font_01_sfnt_off0000bfab.bin
70a011105fcc2b7652edfee141ee5e5b69893d62b5483363a000c52501156362		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBFAB 10464 bytes

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