Malicious PDF — malware analysis report

Static analysis result for SHA-256 21649d51ba301b77…

MALICIOUS

PDF

44.1 KB Created: 2020-08-24 21:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9df51d3eeef13aab18ff684f63473bd SHA-1: d33df708cfbc260f4202cb3313f0f9807636e49d SHA-256: 21649d51ba301b77c2d465cc4553922c4cf4ab3f8aee8960ebb788d60af45e31
150 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 the URL 'https://ttraff.com/pify?keyword=wifi+adapter+beamforming', suggesting a lure related to technology or networking. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to malicious content, likely for phishing or malware distribution.

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=wifi+adapter+beamforming
    • http://files.orchardfarmandcottages.co.uk/uploads/1/3/1/3/131379732/4480759.pdf
    • http://files.singingsawpress.com/uploads/1/3/0/8/130874180/logid_godufovipubis_tatuma_xizarepewozip.pdf
    • http://files.conservationaffair.com/uploads/1/3/1/8/131859993/8159197.pdf
    • https://cdn.shopify.com/s/files/1/0434/4066/8838/files/37536834166.pdf
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/35550097046.pdf
    • https://cdn.shopify.com/s/files/1/0437/6087/7729/files/71220935147.pdf
    • https://cdn.shopify.com/s/files/1/0433/5792/9622/files/palaxetejinukoraviwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/2523/5111/files/82635204031.pdf
    • https://cdn.shopify.com/s/files/1/0450/9433/8712/files/59834596614.pdf
    • https://cdn.shopify.com/s/files/1/0438/1320/8226/files/fomuzexudusudulejare.pdf
    • https://cdn.shopify.com/s/files/1/0428/8466/1414/files/99388792602.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1660/files/layunin_ng_akademikong_pagsulat.pdf
    • https://cdn.shopify.com/s/files/1/0438/6134/4406/files/65772182999.pdf
    • https://cdn.shopify.com/s/files/1/0463/0278/9789/files/21182840618.pdf
    • https://cdn.shopify.com/s/files/1/0429/6753/1673/files/accounting_resume.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_off00006ea3.bin
5826a5c618d906c11fb10e0ff391cebba2eef46bb292d4f8a73afe99621b2093		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA3 5304 bytes
font_01_sfnt_off000080a0.bin
e54cee2cde950f5266e4387e58dd160c5b95b3070e63afbb8264bae6e0a520d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A0 10204 bytes

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