Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0382a087df1690f…

MALICIOUS

PDF

47.1 KB Created: 2020-08-06 14:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9707f3ab76d2bb965df927fae0a857a0 SHA-1: 386e02846e6bd58e406404ed13b46fe0ef87c8b4 SHA-256: d0382a087df1690fc46898d3f7fba5606a5e7622bca274fc65755af2a370fb61
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the same topic as the malicious URL, suggesting a lure to trick users into clicking the links. The presence of numerous Shopify-hosted PDF links, while individually benign, contributes to a link farm strategy.

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.com/wb?keyword=sas%20similarity%20theorem%20pdf
    • http://files.apetsreflection.com/uploads/1/3/1/1/131164081/220901.pdf
    • http://monupeduk.htagmedical.com/uploads/1/3/1/4/131406390/vamano.pdf
    • http://files.tulalipyouthservices.com/uploads/1/3/2/8/132814929/6799338.pdf
    • http://files.speedandsprocket.com/uploads/1/3/0/9/130969332/c2808390d92da4e.pdf
    • https://cdn.shopify.com/s/files/1/0438/9391/5800/files/poxibodiraxiraxirefo.pdf
    • https://cdn.shopify.com/s/files/1/0439/3166/4552/files/autocad_mac_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0440/0106/7166/files/modern_geometrical_optics_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2954/files/70791063882.pdf
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/fisiopatologia_da_ascaridiase.pdf
    • https://cdn.shopify.com/s/files/1/0435/3789/1480/files/14166652348.pdf
    • https://cdn.shopify.com/s/files/1/0429/7755/8681/files/jeximeloboranifufujorig.pdf
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/ranifomusesojozon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/91941560354.pdf
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/lagupojusexe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/warabizuzuponidowej.pdf
    • https://cdn.shopify.com/s/files/1/0429/6730/2295/files/79006982037.pdf
    • https://cdn.shopify.com/s/files/1/0434/4505/9749/files/18593439141.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/zosafivibikomekelojax.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_off0000629c.bin
35ebe81ade96c411e0c2f2e499429ec07c5504ea985f80ec94edaf9c8a9d666b
pdf-font-stream PDF embedded font (sfnt) at offset 0x629C 5488 bytes
font_01_sfnt_off00007520.bin
a7797aa8df5921f1a4570207c52af2ae4356bff2bbc8c17919b5e39c514af7db
pdf-font-stream PDF embedded font (sfnt) at offset 0x7520 10712 bytes
font_02_sfnt_off000099f2.bin
5ec139a263af45d7cbac1bc1a000173eb4e7f97797aba0f35ce2e37505b4886e
pdf-font-stream PDF embedded font (sfnt) at offset 0x99F2 16116 bytes