Malicious PDF — malware analysis report

Static analysis result for SHA-256 be95cc8fcd54edcb…

MALICIOUS

PDF

42.5 KB Created: 2020-08-13 00:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2ad9405cd23dfff202e6a7bf9247d37 SHA-1: 13ccfdcaceb06ffebcc6dd79f6e39745ddf31dbd SHA-256: be95cc8fcd54edcbde3ed67b5e7c13aafa0f13643c44c0e60aa449a5461be6f1
150 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector. The document body itself contains text related to narrative genres and the URL 'https://ttraff.ru/pify?keyword=elementos+del+genero+narrativo+pdf', suggesting a lure to trick users into visiting malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=elementos+del+genero+narrativo+pdf
    • http://files.landcom.co.uk/uploads/1/3/1/4/131483361/4904230.pdf
    • http://bamitupa.tasmanissues.net/uploads/1/3/2/6/132682646/ginigoxaworibe.pdf
    • http://files.ericatremblayresumespecialist.com/uploads/1/3/0/7/130740212/7c0cd42d56fcdc2.pdf
    • http://files.northhoffmanvet.com/uploads/1/3/1/3/131382274/mumopopapozot-sinetedipu.pdf
    • http://files.priorityarts.com/uploads/1/3/1/8/131871659/mesuwan.pdf
    • https://cdn.shopify.com/s/files/1/0429/4439/7468/files/bebimuxuri.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zudofujavulasosajawigubi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/xugorifiterogiturem.pdf
    • https://cdn.shopify.com/s/files/1/0437/9013/9549/files/boluwobigagunikudex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/placental_abruption_acog.pdf
    • https://cdn.shopify.com/s/files/1/0431/5666/8565/files/hypospadias_and_epispadias.pdf
    • https://cdn.shopify.com/s/files/1/0447/3038/4537/files/google_docs_journal_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/wulixipadadufoxabu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6133/6471/files/73510864625.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2006/files/xasinuwenerewapananatir.pdf
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/19322908066.pdf
    • https://cdn.shopify.com/s/files/1/0435/6230/3637/files/11777295507.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_off000067bc.bin
9572d8906468600e47f89027b6abd62ea84ce050a43830303ded630cb558a038
pdf-font-stream PDF embedded font (sfnt) at offset 0x67BC 5380 bytes
font_01_sfnt_off000079fe.bin
4b7eb992fdb5626e261a3df9d2ed1aff671f74812b553bf5f27053b6ae3e434f
pdf-font-stream PDF embedded font (sfnt) at offset 0x79FE 10192 bytes