Malicious PDF — malware analysis report

Static analysis result for SHA-256 866bf3d66e08dfd5…

MALICIOUS

PDF

47.6 KB Created: 2020-08-30 08:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e30245463a1c5886bc970224aedf2b6 SHA-1: 2ad2bddd7ef16ea2ff8d74c27dcad7cb05f6396a SHA-256: 866bf3d66e08dfd555c3866b1ba1a1c155315002b21b480943c21f8b9817ec55
154 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.ru/wix?keyword=blossoms+of+the+savannah+pdf+book', is identified as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous links pointing to Shopify-hosted PDFs. This suggests an attempt to lure users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the presence of malicious links is a strong indicator of malicious intent.

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.ru/wix?keyword=blossoms+of+the+savannah+pdf+book
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/79648873020.pdf
    • https://cdn.shopify.com/s/files/1/0432/8567/6188/files/us_lottery_form.pdf
    • https://cdn.shopify.com/s/files/1/0439/0692/4712/files/derawunabap.pdf
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/80292837144.pdf
    • https://cdn.shopify.com/s/files/1/0428/4946/8582/files/94647300788.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8306/files/83678689769.pdf
    • https://cdn.shopify.com/s/files/1/0439/7439/4014/files/jufugikovuzajib.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa1ed2993df2487d960fe704b1703569.pdf
    • https://static.usrfiles.com/ugd/73f3b0_0173b96386244cbb975835df844b11be.pdf
    • https://static.usrfiles.com/ugd/e33828_12f18e29e08347eaac539615984dd3a4.pdf
    • https://cdn.shopify.com/s/files/1/0433/0917/0856/files/81601948911.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0816/files/17412489669.pdf
    • https://cdn.shopify.com/s/files/1/0431/4166/0826/files/70049714725.pdf
    • https://cdn.shopify.com/s/files/1/0436/5346/4214/files/fajomilolizekilivabixir.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a40.bin
09d6b1ea7a107b3a008f334ce960a703c446b0f030d858817fac1df5311bf3fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A40 5496 bytes
font_01_sfnt_off00006ccb.bin
255d927a718dc76e02088e9f991effe45cec4fcdb13c51fe489b4dd62a0ed8ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCB 4476 bytes
font_02_sfnt_off00007955.bin
9d8e296472a1c02af273852995dc491e36794db67d9f38cc9858bc622269e66f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7955 10288 bytes
font_03_sfnt_off00009cb1.bin
35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB1 16036 bytes

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