Malicious PDF — malware analysis report

Static analysis result for SHA-256 597b65e2616f12d1…

MALICIOUS

PDF

32.3 KB Created: 2020-09-19 14:14:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48bcef94602dffdf07cd7608950d89e3 SHA-1: 063cc46b7810fa8b4246b9f0234b416ba83e1a66 SHA-256: 597b65e2616f12d1e5a70318ed4cf835873f4e1674edfed13da1feee20e84671
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to a URL offering a 'free wifi hotspot apk'. This, combined with the presence of numerous other PDF links, suggests a link farm designed to distribute malware or lead to phishing sites. The document body, though heavily obfuscated, contains the same malicious URL and other PDF links, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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.club/wix?keyword=free+wifi+hotspot+apk
    • http://sevev.covefiinvestments.com/uploads/1/3/2/6/132681542/32a83412.pdf
    • http://files.bodyledge.com/uploads/1/3/2/7/132740278/8190514.pdf
    • http://files.summitbuilders.us/uploads/1/3/1/4/131483603/sipowoboke_juvujo_sokunemidozukok_vojute.pdf
    • http://files.dcsportshall.com/uploads/1/3/1/8/131871740/617610.pdf
    • https://d1abf650-ac7e-49cc-b8ea-9dd1ec465251.filesusr.com/ugd/9904c2_6f3b6ddc77204553bbe6c01397374c1d.pdf?index=true
    • https://b4a77c22-e45a-4cc4-9a3f-3a4baec0ddfc.filesusr.com/ugd/5e8de6_0d500f7669f5465fb1f93afe946407bb.pdf?index=true
    • https://4a850197-ba94-4117-adff-717316a850f9.filesusr.com/ugd/1d64af_a66d4671de254e839ea35470f9a86ebc.pdf?index=true
    • https://e51cd099-8037-426f-a592-6546ed35e700.filesusr.com/ugd/f96b02_d3c04171cc454735b5ad7de21bc4e65a.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0440/8141/4296/files/suvemipasutetakujax.pdf
    • https://cdn.shopify.com/s/files/1/0434/4256/9382/files/advanced_vocabulary_and_structure_practice.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_off00004188.bin
59f843b4d9664e813cce0494113fd82a010dc5545059fbe1c341ddff01710838		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4188 5068 bytes
font_01_sfnt_off000052d6.bin
ec6ae9a8f29abeade8c6ab6ac70d9963d3b48214577d43de33c038ec06fe9e54		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D6 10060 bytes

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