Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ddbfe25a71ad231…

MALICIOUS

PDF

37.9 KB Created: 2020-08-19 10:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: beab62481d6e8fd46dbe04297e86fb90 SHA-1: baab5f00ddcdf04b28d585d50baa0ce0f5d7def3 SHA-256: 4ddbfe25a71ad23107a72ddc25b3ca97b82ba1a63832a52aca400614d283cc95
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bheema+tamil+songs+ringtone, which is likely used to redirect users to a malicious site. The document body contains garbled text along with several embedded URLs, reinforcing the attack pattern of a link farm designed to distribute 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.ru/pify?keyword=bheema+tamil+songs+ringtone
    • http://gikodeke.jonjohndesign.com/uploads/1/3/2/8/132814930/fivujigusif_wazituwofiba_zavesa.pdf
    • http://files.pinalashess.shop/uploads/1/3/0/7/130775750/jevamuxepafo.pdf
    • http://milop.openhouserealtycareerinfo.com/uploads/1/3/2/7/132741334/kifosevo.pdf
    • http://files.nowurcooking.com/uploads/1/3/1/4/131437724/4e969a.pdf
    • https://cdn.shopify.com/s/files/1/0434/6380/3046/files/45073603289.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pifafesilepobusofamut.pdf
    • https://cdn.shopify.com/s/files/1/0433/5891/2662/files/cancer_de_mama_definicion_oms.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0629/files/58985169137.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/kakitij.pdf
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/ignou_assignment_front_page_format_doc.pdf
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/how_to_export_a_gif_in_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0433/1841/1417/files/xarove.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/afcon_2019_fixtures.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8077/files/9184128216.pdf
    • https://cdn.shopify.com/s/files/1/0431/8953/4869/files/kojikuwewe.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_off000053ee.bin
bed03284214aa24bedbc9094e3e5616a58f9bd1f8fccc482985504c505e2c84f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53EE 5148 bytes
font_01_sfnt_off0000654a.bin
c2f0f253135284255bc9c6bd3f8025081483a0daa2e3cb2761bbd850868f89c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654A 11804 bytes

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