Malicious PDF — malware analysis report

Static analysis result for SHA-256 568347d96ac5bc2a…

MALICIOUS

PDF

51.1 KB Created: 2020-08-24 00:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afd6c1160c4c95424f6c18268020d11b SHA-1: ed98bd6cb14e30a8f51ed36600d2ff8b916d34d2 SHA-256: 568347d96ac5bc2a6f1a994f7e2cf188f26f4b242a68dd6faa7d4cf8c33a0090
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting the document's primary purpose is to drive traffic to this malicious site. 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=green+bay+vs+eagles+injury+report
    • http://files.hypnomads.com/uploads/1/3/1/3/131384573/badc8b2e909.pdf
    • http://files.cobilconnect.com/uploads/1/3/0/9/130969853/6ea8d66a.pdf
    • http://files.pvphsmusicboosters.com/uploads/1/3/1/8/131871854/7c6371ca.pdf
    • http://fefubut.darkhorsegolf.com/uploads/1/3/0/7/130738629/didiganojadoxoxivo.pdf
    • http://files.wintersfrenchbulldogs.com/uploads/1/3/1/4/131413718/81f02.pdf
    • https://cdn.shopify.com/s/files/1/0435/5345/6289/files/unbalanced_forces_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6587/files/71302208931.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3288/files/tolarubu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0712/3357/files/42454448800.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/50296171100.pdf
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/68671711943.pdf
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/tenesamutakefes.pdf
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/joyce_vedral_workout_plan.pdf
    • https://cdn.shopify.com/s/files/1/0435/4349/4815/files/sudozugenemabodisovolisav.pdf
    • https://cdn.shopify.com/s/files/1/0432/8718/3515/files/water_filtration_plant_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0439/0522/0776/files/rig_veda_malayalam_translation.pdf
    • https://cdn.shopify.com/s/files/1/0435/2871/6439/files/17878948120.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000089ca.bin
8180cb27637454dbc04c3d22dc27eeb83fa6b91ce0074032d0c5d783c252deeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89CA 5396 bytes
font_01_sfnt_off00009c4a.bin
f625efc653f94ec30194d956d93afdb32cfe39147f9508ba4104a1477194884b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C4A 10240 bytes

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