Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdaa287fb2815e62…

MALICIOUS

PDF

47.6 KB Created: 2020-08-07 08:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7cf0213692afe4e698359b54fba67f8 SHA-1: bc26065eeb4999b4c87cdbd7cb0b45d636445203 SHA-256: bdaa287fb2815e6204492d2a2924a4589dab74c4bb163a9b2f04373ccc52a599
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK, which points to 'https://ttraff.com/pify?keyword=banking+awareness+book+for+ibps+po+pdf'. This indicates the document is designed to redirect users to potentially harmful sites. The presence of numerous other external PDF links, as flagged by PDF_SEO_LINK_FARM, further supports a malicious intent, likely for SEO-based phishing or malware distribution. 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.com/pify?keyword=banking+awareness+book+for+ibps+po+pdf
    • http://files.starkeyspoint.com/uploads/1/3/0/7/130776573/d7f88ebe.pdf
    • http://files.weddingceremonypro.com/uploads/1/3/0/9/130969885/165cdfd2eb50ae.pdf
    • http://files.myscentsessentials.com/uploads/1/3/1/4/131407855/2942918.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/95922574920.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/54387246750.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopiforosolakalaxelavur.pdf
    • https://cdn.shopify.com/s/files/1/0433/2145/8853/files/xobuzetefu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4299/files/vosowilorukewoxetifizar.pdf
    • https://cdn.shopify.com/s/files/1/0430/4302/9143/files/georgia_learners_permit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/borutazaweluv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75278808376.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/fatosuxin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sogogetuxupoxex.pdf
    • https://cdn.shopify.com/s/files/1/0437/7231/3751/files/vaporugigeruzikiwidoxuki.pdf
    • https://cdn.shopify.com/s/files/1/0437/2378/4360/files/42231700098.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_off00006609.bin
1638eb78d969429092c43bff468e7a0e55b10f7a07576306810e50f75fa2cfdc
pdf-font-stream PDF embedded font (sfnt) at offset 0x6609 5524 bytes
font_01_sfnt_off000078ee.bin
33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9
pdf-font-stream PDF embedded font (sfnt) at offset 0x78EE 2116 bytes
font_02_sfnt_off000082b8.bin
852bc1f0dd004b4e2b67f5fd4a7bad384fb3404cc58dfccb9035e2a91fab786f
pdf-font-stream PDF embedded font (sfnt) at offset 0x82B8 14860 bytes