Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfab8effd46dc0fe…

MALICIOUS

PDF

45.3 KB Created: 2020-08-04 19:34:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 979f1a93fde7f6dc40c3f567469690f7 SHA-1: cd0627b9d24bc02c5ee230136f99b2cdae4f31f9 SHA-256: cfab8effd46dc0fe29ded338db5aca45dc9bd90e3d08d71504553d99a8927fa1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document exhibits characteristics of a link farm, embedding numerous external links, many pointing to Shopify-hosted PDFs. A critical heuristic identified a malicious redirector link to 'ttraff.com', suggesting this PDF is part of a phishing or malware distribution scheme. The ML classifier strongly supports the malicious verdict.

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=list+of+industrial+automation+companies+in+pune+pdf
    • http://sipeg.ralfrosskamp.com/uploads/1/3/0/7/130775997/32a7bbc4ba.pdf
    • http://files.skipsisters.co.uk/uploads/1/3/1/3/131383314/76c0b345ec866.pdf
    • http://wuxam.dawgstop.com/uploads/1/3/0/7/130739826/8428953.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/80945563718.pdf
    • https://cdn.shopify.com/s/files/1/0431/6141/9927/files/15254948066.pdf
    • https://cdn.shopify.com/s/files/1/0439/2307/9323/files/vefekuwanafatorof.pdf
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/bataralonevemexedurapak.pdf
    • https://cdn.shopify.com/s/files/1/0437/5491/3950/files/malusowutusiwukusosabum.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6405/files/c_operator_precedence.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/41517766416.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/90332723695.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1079/files/73777386640.pdf
    • https://cdn.shopify.com/s/files/1/0434/0350/9914/files/kogosu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7878/6965/files/vozapodukigujere.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/34309662693.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/59656522897.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.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/
    • https://cdn.shopify.com/s/files/1/0428/9835

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072d4.bin
19099ea5d7a42aee5190ff6798962464d646dac5c0dc20c9d5ae4657a5a7e497		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72D4 5240 bytes
font_01_sfnt_off00008493.bin
26004b0e1a9cceaa570ab8d9f289db9d79f864fa59bde30cb370e77c0097ca13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8493 10576 bytes

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