Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d4ef9ae7249a85d…

MALICIOUS

PDF

40.2 KB Created: 2020-08-16 22:56:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00b858207098febe031874f834d5cc64 SHA-1: a296dca095fbab20af14e5e9c50618572b8c2029 SHA-256: 4d4ef9ae7249a85d1b67aaa0bc84f8af676c6b2bfa6494d22fea43be4a652a01
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.cc/pify?keyword=bose+soundbar+700+remote+manual, which is flagged as malicious. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites.

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.cc/pify?keyword=bose+soundbar+700+remote+manual
    • http://fopipefi.lookingforhappiness.org/uploads/1/3/1/3/131379326/8635050.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/financial_accounting_key_terms.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/sujajasiwikotoxugewuxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/shijou_saikyou_no_deshi_kenichi_ova.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/blank_map_of_african_countries.pdf
    • https://cdn.shopify.com/s/files/1/0433/1238/2117/files/rexulorasifipojogemipup.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/attractive_advertisement_project.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/antagonistas_dopaminergicos.pdf
    • https://cdn.shopify.com/s/files/1/0434/1235/7270/files/80114024421.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/nafabulinatu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4865/7311/files/tovupiwu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4994/3202/files/ronagegamijupagikezoto.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_off000060a0.bin
3488b9b4400f990260f34badbb9d8836dab995cafe633e4ae4cef90b826fa782		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A0 5380 bytes
font_01_sfnt_off000072cd.bin
e85caf00892ae4aa06b1316ff12fcbd10ae7b9d9453294e15ecdbc4089f33a89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72CD 9544 bytes

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