Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdee5f6f3d1e7f0c…

MALICIOUS

PDF

45.3 KB Created: 2020-09-10 01:18:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ebe6f8f7215e53f31018a20da6a7b7a SHA-1: a0b160bdf6e3399905574c999459f1700f402a6f SHA-256: fdee5f6f3d1e7f0c68c670ceb1bd81dc9328482a31277491ec6691299bc56451
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary link, disguised as an algebra worksheet answer key, leads to a malicious redirector. This indicates a phishing or social engineering attack aimed at directing users to malicious content. No scripts were extracted, but the PDF structure and embedded links strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.link/wix?keyword=algebra+2+factoring+polynomials+worksheet+answer+key
    • http://kizokaz.supervillesovak.com/uploads/1/3/1/4/131437736/pajufosirovomofuwo.pdf
    • http://files.barkingpreschool.com/uploads/1/3/0/7/130738852/zuziz.pdf
    • http://files.jennayvonne.com/uploads/1/3/2/7/132740488/rezedufisoraxob.pdf
    • http://nirofemav.delightthyself.com/uploads/1/3/1/3/131397997/gukogakapezagapadix.pdf
    • http://files.swazisafe.org/uploads/1/3/0/9/130969645/lanuful_juvotugos_dunusariwodar_gosumekajetur.pdf
    • http://files.sincitytees.com/uploads/1/3/1/3/131379014/00855a7dcf12ba.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/87744750388.pdf
    • https://cdn.shopify.com/s/files/1/0430/6645/8265/files/xalajuvategit.pdf
    • https://cdn.shopify.com/s/files/1/0431/4398/7357/files/wesagizogix.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8821/files/katavalegekolu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/dusemiziwoguta.pdf
    • https://cdn.shopify.com/s/files/1/0435/5214/5560/files/online_hsc_marksheet_maharashtra_board.pdf
    • https://cdn.shopify.com/s/files/1/0440/2040/0286/files/brahmo_samaj_notes.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7264/files/customer_feedback_report_meaning.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_off00007222.bin
865e0e3b3cc0db72f6d295e14238f3a4025fad3adf29c95ca5a5db49a79a5dc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7222 5948 bytes
font_01_sfnt_off0000865a.bin
dacfed9667f8df1f411a3f8443192262d07cf1906910cda162a8b6f5d421ab6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x865A 9780 bytes

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