Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0932b5fc90c4b2c…

MALICIOUS

PDF

41.3 KB Created: 2020-08-22 01:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ac41865878fddbcc9789bb27add8bd6 SHA-1: 380602099830afc200082005ce121052ca39f702 SHA-256: e0932b5fc90c4b2ce5b9acfa740c9111bbd9e612d119eda930a557f7f438cf87
154 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic identifying a link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains a reference to the same malicious URL. The ML classifier strongly indicates maliciousness, and the overall structure suggests a link-farming or redirection attack designed to lead users to harmful content.

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/pify?keyword=free+timeline+infographic+template+powerpoint
    • http://files.riotbread.com/uploads/1/3/0/9/130969498/9852eb5ca61b1aa.pdf
    • http://files.mpflynngroup.com/uploads/1/3/0/8/130873951/5607014.pdf
    • https://cdn.shopify.com/s/files/1/0452/5201/8337/files/belajar_photoshop_lengkap.pdf
    • https://cdn.shopify.com/s/files/1/0438/2251/4338/files/farseers_raging_tempest_mount_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/3081/3592/files/81886690894.pdf
    • https://cdn.shopify.com/s/files/1/0438/5066/2053/files/xujipavuzuravupepozaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/viwawetemipirexejigisine.pdf
    • https://cdn.shopify.com/s/files/1/0431/6187/8687/files/dikakokaset.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/21504709105.pdf
    • https://cdn.shopify.com/s/files/1/0440/9766/7224/files/fojizadam.pdf
    • https://cdn.shopify.com/s/files/1/0428/7394/6275/files/pikagilijagarabigumikamen.pdf
    • https://cdn.shopify.com/s/files/1/0439/9969/0910/files/tebilifana.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061f2.bin
e0d289a8737cda622e7268328628dfca7f91587ace84cfbdba256f086c139ed7
pdf-font-stream PDF embedded font (sfnt) at offset 0x61F2 5300 bytes
font_01_sfnt_off000073e2.bin
22a14ad0bf39ce6a9e33f4b74b8b311e677185ac6f158212ad8e065212ec633f
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E2 10572 bytes