Malicious PDF — malware analysis report

Static analysis result for SHA-256 73e665f83c4af9b4…

MALICIOUS

PDF

39.3 KB Created: 2020-09-03 03:17:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba8e9a27b032db4919b4185bca0ae13d SHA-1: 8bac9cc29ea45cf2813147595c25513fc8ff2486 SHA-256: 73e665f83c4af9b454e92a8e9c0bd022f5115b2341a95b729920224569392756
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDF files, forming a link farm. One of the primary links, 'https://ttraff.com/wix?keyword=platform+film+full+hd+mein', is identified as a malicious redirector. The document's structure and the presence of these links suggest an attempt to direct users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the PDF's nature points to a social engineering attack.

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=platform+film+full+hd+mein
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/1f2646_dcd8a068851344539b27741f915b64a8.pdf
    • https://static.usrfiles.com/ugd/ab059d_88deeb9dfeb84944ac623ae488236e7e.pdf
    • https://static.usrfiles.com/ugd/18122d_a1fa682198154602be2fc8772ce0fbe9.pdf
    • https://static.usrfiles.com/ugd/b910ae_0a64ac649ddd43f1af1b344b39ae2065.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/22650439267.pdf
    • https://cdn.shopify.com/s/files/1/0464/4903/3384/files/peaky_blinders_season_5_ep_5.pdf
    • https://static.usrfiles.com/ugd/800b88_2151c9b3c7b2444ca3d8edc0c76b1eed.pdf
    • https://static.usrfiles.com/ugd/38bf1f_187ebd5a45bd44c6b9a2eb847975966f.pdf
    • https://static.usrfiles.com/ugd/b444d4_f0d45309167b4d0ea74d506383e775a5.pdf
    • https://static.usrfiles.com/ugd/822ecd_2443d467a0374559881b7848f7bbc527.pdf
    • https://static.usrfiles.com/ugd/b8c837_a83db85a2edc43d598673373dc4a5f16.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1f77c90893a4412aaa3473ad3b14f38.pdf
    • https://static.usrfiles.com/ugd/b8c837_f68ba551c4664203a2ecacec1817c8da.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_off00005beb.bin
1d8dccde2ea8e557a1770c432dcf386e83bb63152e3507bbdf9d66497842c80e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BEB 4968 bytes
font_01_sfnt_off00006ca6.bin
8d3f9f61fc5de979def1260270711e39ec08853a0c06d5e3e15953e79cce431b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA6 10464 bytes