Malicious PDF — malware analysis report

Static analysis result for SHA-256 c200421fdeb96e67…

MALICIOUS

PDF

45.8 KB Created: 2020-08-12 03:30:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96ac1a8d2bbfbdfa9f2901a672e2c33a SHA-1: a4d6b8d4a779f0ed067c3a8a384d1b159c7352da SHA-256: c200421fdeb96e67463d9f7579b59eef5b9cab1e1d6ea0b71666c675a2b2b4fa
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to external resources. One critical heuristic identified a malicious redirector link (https://ttraff.cc/pify?keyword=boolean+algebra+pdf+notes), indicating an attempt to direct the user to a harmful destination. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of numerous Shopify-hosted PDFs suggests an attempt to blend malicious links with seemingly benign content.

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.cc/pify?keyword=boolean+algebra+pdf+notes
    • http://wazowin.secondsightvisuals.com/uploads/1/3/1/4/131407089/1587d892b2.pdf
    • http://gijet.wendyscountrymarket.com/uploads/1/3/0/7/130776208/b1f36.pdf
    • http://govalu.squarecatvinylshop.com/uploads/1/3/0/8/130813453/3835748.pdf
    • http://mokaf.altitudephysicaltherapy.com/uploads/1/3/0/7/130775195/5221410.pdf
    • https://cdn.shopify.com/s/files/1/0434/1442/1653/files/reliability_in_qualitative_research.pdf
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/78616421089.pdf
    • https://cdn.shopify.com/s/files/1/0432/7030/7995/files/noruvonuxotuvikubo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/zajekalemegadasanarurek.pdf
    • https://cdn.shopify.com/s/files/1/0435/5699/5233/files/1984_cadillac_coupe_deville.pdf
    • https://cdn.shopify.com/s/files/1/0439/1724/6632/files/tamuvokomufuzujavo.pdf
    • https://cdn.shopify.com/s/files/1/0440/8839/3893/files/61038167000.pdf
    • https://cdn.shopify.com/s/files/1/0434/0042/9731/files/nokodapodoxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8206/files/27213389035.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/55929666252.pdf
    • https://cdn.shopify.com/s/files/1/0433/3086/3259/files/rulapevukavovogenipokad.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/lifujumegerenan.pdf
    • https://cdn.shopify.com/s/files/1/0434/6360/6437/files/kisulisorigi.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/
    • https://cdn.shopify.com/s/files/1/0433/3086/3259/files/rulapevukav

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005987.bin
e28068593d7aff78b8753a916e5705eee806f796bc5687f7ade4d17ed3222713
pdf-font-stream PDF embedded font (sfnt) at offset 0x5987 5396 bytes
font_01_sfnt_off00006be9.bin
298a27e38ddf3f55e4b81decbbb97fa250704c6ce8adcd4c0c368a782ae7d126
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE9 12756 bytes
font_02_sfnt_off000094ba.bin
099d6ecc4c90b811dbcb347f43da84e98a92fba700bdaed59cba77f47198b333
pdf-font-stream PDF embedded font (sfnt) at offset 0x94BA 16120 bytes