Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a4d31b905b9349d…

MALICIOUS

PDF

43.6 KB Created: 2020-08-04 01:57:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aa9946a2457c03fcac0e5c4f12b992df SHA-1: 8bf12801eacdc4924d3bfc6228384c9120548733 SHA-256: 2a4d31b905b9349dfb04b2a20c2044ecfb4be418cf341af93cfa136b8e19f9a0
150 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, contains text related to 'editing PDFs online' and includes the malicious URL, suggesting a phishing or social engineering lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which are hosted on Shopify, likely to obscure the malicious redirector. No scripts were extracted from this sample.

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.cc/pify?keyword=beveiligde+pdf+bewerken+online
    • http://files.aquariusfunding.com/uploads/1/3/1/3/131383698/4d6c1b19f2.pdf
    • http://files.koonyagarlicfestival.com/uploads/1/3/0/7/130776141/miravadisupixofedar.pdf
    • http://files.buildmenard.com/uploads/1/3/0/9/130969695/tufekidupoxi-vurupuralunoto-mukapivafafage-niwegibox.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11147191401.pdf
    • https://cdn.shopify.com/s/files/1/0438/7300/9819/files/domibawumofolugez.pdf
    • https://cdn.shopify.com/s/files/1/0432/9255/7462/files/lewufezo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9311/5548/files/va_form_21-_0779.pdf
    • https://cdn.shopify.com/s/files/1/0433/4387/2153/files/neronunuzaguzop.pdf
    • https://cdn.shopify.com/s/files/1/0435/6059/9711/files/cisco_ccie_routing_and_switching_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/91131813203.pdf
    • https://cdn.shopify.com/s/files/1/0433/5081/8969/files/68948803187.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/radeziwiwilajumigetadad.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/official_methods_and_recommended_practices_of_the_aocs.pdf
    • https://cdn.shopify.com/s/files/1/0432/2151/6449/files/40545641892.pdf
    • https://cdn.shopify.com/s/files/1/0433/7978/5891/files/bowemifepepipofawunoxikex.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005faf.bin
7f0d8d6ec68f2212c17cc97ea36470f7d743c2c720fd64d6aad32aa4963e66ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAF 4932 bytes
font_01_sfnt_off0000708e.bin
7f0bc62eb5f3200280bbfcc3be972ae73071df641fd310e72b61cb513ffc8952
pdf-font-stream PDF embedded font (sfnt) at offset 0x708E 10552 bytes
font_02_sfnt_off000093c3.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x93C3 4324 bytes