Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff2325dfc3241d7…

MALICIOUS

PDF

52.1 KB Created: 2020-08-17 12:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 378b6ad633857294d7b7ac536c51e160 SHA-1: 7993b83b8df934a2ae81c6bada5b2c9727a04f2a SHA-256: aff2325dfc3241d7c4912efec2c0c9d32c0ac30fe31f9498431381a5d638b72a
176 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating malicious intent, including a critical finding of a PDF redirector link to 'ttraff.ru'. The document body and heuristics also suggest a lure related to payment or invoices, combined with urgency. The presence of a large number of embedded links, many pointing to Shopify domains, suggests a link farm designed to obscure the ultimate destination. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bsnl+landline+bill+view.

Heuristics 6

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=bsnl+landline+bill+view
    • http://files.jesuscatmovie.com/uploads/1/3/1/4/131437702/mazoxirexaligi_melirokido_jivalimus_povogi.pdf
    • http://muzufe.laurellesparks.com/uploads/1/3/0/9/130969723/sikanedafide-vejuresitaxozo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3463/9522/files/lakevetevisapuxoferitewo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/wepoxumiwunuxor.pdf
    • https://cdn.shopify.com/s/files/1/0432/8967/3883/files/balukape.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/56799849584.pdf
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/99591857966.pdf
    • https://cdn.shopify.com/s/files/1/0434/5023/7085/files/gta_vice_city_android_appvn.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0445/files/9097918338.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/xujavosisako.pdf
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/30489884331.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97428896976.pdf
    • https://cdn.shopify.com/s/files/1/0435/8628/9832/files/61381004738.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008674.bin
4aba2bb845853324476be69e5ed1bf4ff35002942389efac2b843cac1129f0e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8674 2828 bytes
font_01_sfnt_off0000906f.bin
291361b29f6bbbcb93ad00b135b88e1fd7ecde4086799515fd5ccb84d3e1cfcc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x906F 5064 bytes
font_02_sfnt_off0000a1c9.bin
d6e700b94400b13ab4e6a0beb9082309a936cd98738f7dfb5ed35cf6cfb990ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1C9 9952 bytes

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