Malicious PDF — malware analysis report

Static analysis result for SHA-256 286fcd99c9f277f4…

MALICIOUS

PDF

49.2 KB Created: 2020-08-07 23:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b97ecac95bd9f986e005ade941cf3986 SHA-1: 769877c8254b5a7b6f3ac3546ef3acbd09e489da SHA-256: 286fcd99c9f277f4ffef1d89d931b0bb45bfe043f5555956b2ff6c57c475053d
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a policy document and the malicious URL. The presence of numerous links to Shopify domains, some of which are confirmed benign, suggests an attempt to blend malicious links with legitimate ones to evade detection. The primary malicious URL is https://ttraff.cc/pify?keyword=policy+on+geometric+design+of+highways+and+streets+2020+pdf, which likely leads to further malicious 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=policy+on+geometric+design+of+highways+and+streets+2020+pdf
    • http://files.gflight559.com/uploads/1/3/1/1/131164202/a6e9d86.pdf
    • http://files.ogdenpediatrics.org/uploads/1/3/1/4/131453432/paxelenabobapasiboni.pdf
    • http://files.dashtangles.com/uploads/1/3/1/4/131406744/288484.pdf
    • http://files.ypdwselinwynbridalhair.co.uk/uploads/1/3/0/7/130775506/nesidutodexuga-sapuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mijafovaginidobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3655/7987/files/50222697465.pdf
    • https://cdn.shopify.com/s/files/1/0433/4924/6110/files/majovedizulak.pdf
    • https://cdn.shopify.com/s/files/1/0437/7581/9927/files/atlas_item_ids.pdf
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/33555801061.pdf
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/nofedivaxajenesoro.pdf
    • https://cdn.shopify.com/s/files/1/0435/7573/8527/files/disogezobagavaselunamu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/importance_of_value_chain_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0450/0792/9508/files/functional_programming_in_javascript_luis_atencio.pdf
    • https://cdn.shopify.com/s/files/1/0427/9438/5575/files/gamatip.pdf
    • https://cdn.shopify.com/s/files/1/0428/2155/0247/files/vizeluzox.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/el_almohadon_de_plumas_y_otros_cuentos_horacio_quiroga.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/866829336.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_off0000787d.bin
81215bd94865f0e9b82f3db96751a775d8c29454642a833d093877c77bc9e800
pdf-font-stream PDF embedded font (sfnt) at offset 0x787D 6036 bytes
font_01_sfnt_off00008cf9.bin
fd219ad44787160a6b2637238b8792fabe816d2e394bab96156595cc579b3be3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF9 13128 bytes