Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfb0844e9d4d2b24…

MALICIOUS

PDF

41.4 KB Created: 2020-08-29 22:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a07d320e7e487cd4e772aea3bb8067c SHA-1: 92774814cc4abcae3f70aea3524e1c5cba4316bb SHA-256: dfb0844e9d4d2b243709f898c0d07d3e0fbcfda27ef067330664331dc522efad
152 Risk Score

Malware Insights

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

The PDF file contains embedded URLs that redirect to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Inuyasha capitulo 189 youtube', suggesting a social engineering tactic. The presence of a PDF link farm heuristic further indicates malicious intent to distribute links. No scripts were extracted from this sample.

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=inuyasha+capitulo+189+youtube
    • https://static.usrfiles.com/ugd/b8c837_709d2b4d8b6d45a790c0f99b97b2bc98.pdf
    • https://static.usrfiles.com/ugd/5b604d_5215bfc227ac4864941fc9ab3e760c03.pdf
    • https://static.usrfiles.com/ugd/b8c837_89ad23fa5c5d4c0ca8e745aeb109c8d4.pdf
    • https://static.usrfiles.com/ugd/405339_1c7e7a3dfc9b49a49b3df1f587950401.pdf
    • https://cdn.shopify.com/s/files/1/0436/7374/7609/files/zofumemo.pdf
    • https://static.usrfiles.com/ugd/2ca09c_e98db479c2b54d4db2e34631b20a1d72.pdf
    • https://static.usrfiles.com/ugd/a467d2_9c1cd79c960149058e0454418578b5d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_7dc2931988214758ae7ed0004285d4b9.pdf
    • https://static.usrfiles.com/ugd/b8c837_6741f90b353c4d09a2050c093fafc4bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_f6dc46405b074502859cef609ce0d915.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/69576486033.pdf
    • https://cdn.shopify.com/s/files/1/0436/7358/3781/files/hallelujah_song_leonard_cohen.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a09.bin
24790f519e6aa06c5fad1d37837ce0413dcd1766ebf3b2f6774b641e4d8c02c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x4A09 3516 bytes
font_01_sfnt_off000056a3.bin
a95fc3dc353bf301fc249174c51c6cc694106f8ef9f78269a705aed6ef18d50b
pdf-font-stream PDF embedded font (sfnt) at offset 0x56A3 5388 bytes
font_02_sfnt_off000068eb.bin
d0948e5d5b900733b1f0aa01a3908bc75f349ec4e82f581a8998f4b36f5da57b
pdf-font-stream PDF embedded font (sfnt) at offset 0x68EB 9884 bytes
font_03_sfnt_off00008a8a.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8A 4324 bytes