Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaaf98d811d476a7…

MALICIOUS

PDF

53.1 KB Created: 2020-08-08 05:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99c18cfdf3ee4a4272458d015ee857fc SHA-1: 80b44e3a5c337359f446d6391966137a59d53b22 SHA-256: aaaf98d811d476a78fd4ec1c06cf836e152eae15ba694515937d10fabe8345bc
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, many of which appear to be generated for SEO purposes. One embedded URL, 'https://ttraff.com/wb?keyword=biografia%20de%20miguel%20cervantes%20saavedra%20pdf', is known to redirect to malicious infrastructure. The ML classifier also strongly indicated maliciousness. The document body contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

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=biografia%20de%20miguel%20cervantes%20saavedra%20pdf
    • http://files.francofestcalgary.com/uploads/1/3/1/4/131437765/xonuze_miwemoje.pdf
    • http://files.rebeccakallies.com/uploads/1/3/1/3/131378990/dujowejumafukurim.pdf
    • http://files.skinsalvy.com/uploads/1/3/1/4/131483098/nugipisiditaloz.pdf
    • https://cdn.shopify.com/s/files/1/0435/7075/7791/files/auma_actuators_wiring_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4933/files/vilolisaroboleku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdf
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/gigawokunafaxefobiguwulix.pdf
    • https://cdn.shopify.com/s/files/1/0433/1274/2550/files/jailbreaking_ios_7._1._2_iphone_4.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jobevemavesofidubuxiwi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/pozotepanab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/titigabibuzumazavuxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/96620085343.pdf
    • https://cdn.shopify.com/s/files/1/0437/6743/1320/files/58220431753.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/tuxanu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7037/4566/files/59938776986.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_off00008e67.bin
3c4b9a0f6ede6caa00e95176ebbd5f9fab55936bdfae5a7ddff968f4167407a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E67 5584 bytes
font_01_sfnt_off0000a160.bin
ded006dcef10e968255d133a093279f91e8c06f10c1ac963840a5c546ca31983		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA160 10976 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.