Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0125e85eb80a4ef…

MALICIOUS

PDF

38.3 KB Created: 2020-08-20 18:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2b7ec710e4e7e3b4bf57748e07140e8 SHA-1: 380415b98e56000b2dd1854e933ff0e9dfba1ec6 SHA-256: a0125e85eb80a4efa5a807b211a8a80e2b0540d7e15f72729a736fc8d0485c97
210 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a catalogue, which is a common lure. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • ClamAV: Pdf.Malware.Agent-9963225-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Malware.Agent-9963225-0
  • 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=hafele+handles+catalogue+pdf
    • http://vekadi.wvuhousing.com/uploads/1/3/0/9/130969465/4713896.pdf
    • http://files.affordableeventsandplanning.com/uploads/1/3/0/7/130776755/88573b.pdf
    • http://demomik.essexwindowfashions.com/uploads/1/3/2/7/132740961/5425892.pdf
    • http://files.pluckings.com/uploads/1/3/0/9/130969616/53d0b6145875b71.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/94272765159.pdf
    • https://cdn.shopify.com/s/files/1/0437/9977/3341/files/komite_audit_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0432/4291/3955/files/37378640003.pdf
    • https://cdn.shopify.com/s/files/1/0437/1123/4197/files/kijov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41078692832.pdf
    • https://cdn.shopify.com/s/files/1/0443/6888/7964/files/mba_assignment_cover_page_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/1044/8798/files/dinufaxunajelefogak.pdf
    • https://cdn.shopify.com/s/files/1/0439/1524/7771/files/risk_of_rain_100_save.pdf
    • https://cdn.shopify.com/s/files/1/0437/2843/7409/files/58263924549.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/wuwuzekewudumowokubirob.pdf
    • https://cdn.shopify.com/s/files/1/0430/0839/3367/files/60871109301.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_off000050a2.bin
a08e96bc2bd0550d19d6d7ded187cb80a7abdab68429dcb81841b5e237928699		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50A2 5280 bytes
font_01_sfnt_off00006295.bin
07030b2a76f5e355db4a3eadf8319b2918c075d46d53f4ec135485f59523b340		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 12848 bytes

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