Malicious PDF — malware analysis report

Static analysis result for SHA-256 6749df3d596a44dc…

MALICIOUS

PDF

71.7 KB Created: 2020-08-06 15:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d38fc568693b05bbc74177bf44da7cdb SHA-1: 371fb877f97de60bc56a85e52c62991dfe954a20 SHA-256: 6749df3d596a44dcaf8a78c5a43d329903df2aa7d87f2536388a78bee345d3cf
162 Risk Score

Malware Insights

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

The PDF contains embedded links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though partially corrupted, suggests a lure related to a 'Canadian citizenship application', aligning with the 'SE_INVOICE_LURE' heuristic. The presence of numerous external PDF links further indicates a link farm designed to distribute malicious content or facilitate phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.com/pify?keyword=canadian+citizenship+application+pdf+2020
    • http://files.mrsmoorehubbardsclassroom.com/uploads/1/3/0/7/130775434/sodomojapa-kifir-xaxuf-guzan.pdf
    • http://files.435676578364674396.com/uploads/1/3/0/7/130738806/59f348dd35030ac.pdf
    • http://files.sjuartdesign.com/uploads/1/3/1/6/131606087/wulixakitanajukaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/4567/5420/files/pasuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5188/4445/files/jewupep.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/ronojir.pdf
    • https://cdn.shopify.com/s/files/1/0429/4633/0791/files/30623451570.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/astrology_for_the_soul.pdf
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/1520040095.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/24271943783.pdf
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/11209243504.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6135/files/89519616695.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/como_usar_las_varillas_de_radiestesia.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db1b.bin
6152ce41203272bd9f3955ce013ca42ff18d6624b66acecbf48006cbf93c6603
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1B 5376 bytes
font_01_sfnt_off0000ed70.bin
65052e9126f40f2afa18096f2820d5a60c88fd9a5f3172554cd0496a7aa626fe
pdf-font-stream PDF embedded font (sfnt) at offset 0xED70 10588 bytes