Malicious PDF — malware analysis report

Static analysis result for SHA-256 aef1f655039fc3ac…

MALICIOUS

PDF

43.3 KB Created: 2020-08-08 14:40:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ea5aa09e950734c981a02868825e144 SHA-1: 601b4f36b5dd66db883b05cebb1c14bd88718819 SHA-256: aef1f655039fc3ac8b75ec901a9dfad905903f8a68d4a738380bbf159eb2f4af
150 Risk Score

Malware Insights

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

The PDF contains a prominent link to a known malicious redirector, traff.com, disguised as a legitimate document. This suggests the primary goal is to redirect the user to a malicious site, likely for phishing or malware delivery. The PDF also hosts a large number of other links, many pointing to Shopify domains, which is characteristic of SEO link farms used to obscure malicious activity. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicate a social engineering attack.

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.com/pify?keyword=gst+authorised+signatory+letter+format+for+partnership+pdf
    • http://files.southvocals.com/uploads/1/3/0/8/130814177/radivitemega_delatowajef.pdf
    • http://files.unconditionalloveministries.com/uploads/1/3/2/6/132695698/8330450.pdf
    • http://files.missinglinkarchives.com/uploads/1/3/1/8/131856188/zepula-debepeju-nogan-tejixiku.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/zuvotodixopale.pdf
    • https://cdn.shopify.com/s/files/1/0429/6025/7177/files/95672490603.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32732230761.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/36170862964.pdf
    • https://cdn.shopify.com/s/files/1/0433/5586/5242/files/labinakiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/7916/3285/files/vawegi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/mawegapofamelevevafa.pdf
    • https://cdn.shopify.com/s/files/1/0432/4343/8244/files/bny_mellon_collateral_management.pdf
    • https://cdn.shopify.com/s/files/1/0434/3834/2311/files/89627196202.pdf
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/jetubakenenul.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/associated_press_sports_writing_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1560/files/sunilejanawojimiwuna.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/43960522884.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_off00006909.bin
52c08dc83fce907fac0a7ca38d8bca6da33ae349b6c09f096e10a938c13a5676
pdf-font-stream PDF embedded font (sfnt) at offset 0x6909 5588 bytes
font_01_sfnt_off00007bed.bin
97c870429a6cec9ff65f6433c2c2976040e70879221ad152fa3854297b86c946
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BED 10512 bytes