Malicious PDF — malware analysis report

Static analysis result for SHA-256 97c4bbe50c6bd03e…

MALICIOUS

PDF

43.3 KB Created: 2020-08-18 13:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 343a22d373450006703b46774b8cf029 SHA-1: d39d593d28ee9c10c35a511b929521bc1d592919 SHA-256: 97c4bbe50c6bd03e2585456a2be91db337604e6c5d32507f5c2701c1f11c6d23
128 Risk Score

Malware Insights

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

The PDF contains a lure related to 'latest android ringtones free' and embeds numerous links, many pointing to Shopify, but one critical link redirects to 'ttraff.com'. This redirector is flagged as malicious. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF link, suggesting a deceptive tactic to mask the malicious redirect. The presence of a link farm and a malicious redirector indicates a phishing or malware distribution attempt.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=latest+android+ringtones+free
    • http://zabun.en.katakeresztely.com/uploads/1/3/1/4/131407406/1e87c5731b8f.pdf
    • http://files.whsak.com/uploads/1/3/0/7/130775045/famevajoj-lalud-nemebux-furegor.pdf
    • http://files.fbcstgeorge.com/uploads/1/3/1/3/131398259/tewutasexaril.pdf
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/dax_reference_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/arithmetic_mathematics_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/44159302850.pdf
    • https://cdn.shopify.com/s/files/1/0437/5222/6974/files/86732918774.pdf
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/53916643427.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9562/files/dugevereligatulul.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1794/files/kupatanamawegekeve.pdf
    • https://cdn.shopify.com/s/files/1/0437/8086/6209/files/japugusadezijomosolelala.pdf
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/61102130693.pdf
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/livro_de_neemias_hernandes_dias_lopes.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_off00006cda.bin
66570804df597b45166790058fdefc3790529dcd1af9d369f5c5e4c4c28973ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDA 4984 bytes
font_01_sfnt_off00007ddd.bin
16fc0f14471ce0021cfca78e19e402122ddd8eb2262cb441c0ce464848918b78
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDD 10192 bytes