Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ffcb2a63f51889d…

MALICIOUS

PDF

45.0 KB Created: 2020-08-19 04:28:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff5519b9bece2fde7cc2ea9e1b384f5c SHA-1: e344b25a9ff08c0f1d85b1fd96dc59abde913a8e SHA-256: 8ffcb2a63f51889d36527ed5202c1110779576e62d058fe5d8cdd8bee4849edd
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One prominent link redirects to a known malicious domain, ttraff.ru, using a keyword-based URL that mimics a search result. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious infrastructure. No scripts were extracted from this sample.

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.ru/pify?keyword=android+auto+not+working+vauxhall
    • http://vibenadu.jeancramerphotography.com/uploads/1/3/1/6/131637814/4909679.pdf
    • http://karuna.atsqueobowmen.com/uploads/1/3/0/7/130776433/d9918d5abd7.pdf
    • http://files.faithbykristywhite.com/uploads/1/3/0/7/130775953/zobebimuka.pdf
    • http://files.okheavenlydog.com/uploads/1/3/0/7/130740522/mamosusukejawa.pdf
    • http://juribemov.vanitiesspa.com/uploads/1/3/2/7/132740405/9148174.pdf
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/61579719388.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/funukifupor.pdf
    • https://cdn.shopify.com/s/files/1/0429/1464/4127/files/71189016512.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/c_create_thread.pdf
    • https://cdn.shopify.com/s/files/1/0431/3835/1255/files/sitemibamo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/deturo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4921/2309/files/xabuwunaxifoxomiru.pdf
    • https://cdn.shopify.com/s/files/1/0433/5462/0059/files/timewarner_albany_ny.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/likiwewobasotefu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4528/2214/files/bemesezusexon.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/kemunevedubepivufijidub.pdf
    • https://cdn.shopify.com/s/files/1/0439/7072/3998/files/fisomon.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8231/files/definition_of_scientific_management_theory.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_off0000719a.bin
73664ca24d9310de269f983d268aec1202db2ea36b8e25e1f436f3eb37d22af0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x719A 5184 bytes
font_01_sfnt_off0000834d.bin
488bb1bfaf085da0cf60ff8acd7ee65293e8d8afc8f92d349aef30fc59993bfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x834D 10440 bytes

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