Malicious PDF — malware analysis report

Static analysis result for SHA-256 212162394a9ae076…

MALICIOUS

PDF

43.7 KB Created: 2020-07-24 13:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8709528c245cbbccb600e95a49ba9753 SHA-1: 2ce6bcf10a793542f8745c571ea7cd42ee76e1f0 SHA-256: 212162394a9ae07622eb0b218ee57d6af2f07b97b532fc1039beb970578a4be0
120 Risk Score

Malware Insights

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

The PDF contains a mass external PDF link farm, with multiple links pointing to Shopify domains and one critical link to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'wkhtmltopdf' and a date, suggesting it might be a generated document used as a lure. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

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=east+west+play+6+manual
    • http://files.jenniferocook.com/uploads/1/3/1/6/131637302/zodilitirafeb.pdf
    • http://files.oxnardwirelessrepairs.com/uploads/1/3/1/8/131856358/girawepapo-gumepitowazug-gojopazivuguku.pdf
    • http://files.spokanehomefuneral.com/uploads/1/3/2/7/132740606/9229299.pdf
    • http://files.oxnardwirelessrepairs.com/uploads/1/3/1/8/131856358/girawepapo-gumepitowazug-gojopazivuguku.p
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/robuserukedudopuvawuput.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/33377952723.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/68672870328.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/804691331.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/51187815900.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/zuraravidugepisipawogawi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/zasepatosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/bodibotutapalurovirawipu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/18098907966.pdf
    • https://cdn.shopify.com/s/files/1/0433/0812/2270/files/setek.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_off00007017.bin
a3747f832717d14369bd8939a4ae33ebd256566e229cd4fadaad33c2edf069e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7017 4896 bytes
font_01_sfnt_off000080be.bin
dac8dae124d1f8dac126f833254fdec88cb98e4dbf2e3aaafd7ef3e4e79ac2ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80BE 9604 bytes

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