Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a0f2ba0a27c4ac5…

MALICIOUS

PDF

45.2 KB Created: 2020-08-07 14:49:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75e545573b9da5cf04c24c1e6a552d49 SHA-1: bc6b3a96047d570eba6226d23a6ea54a1105ba06 SHA-256: 9a0f2ba0a27c4ac50bd34d582533ba735e5744131a48ab33c065b0adc8150638
120 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 pointing to external resources, which is characteristic of a link farm. One of these links, 'https://ttraff.ru/pify?keyword=theologies+of+ancient+greek+religion+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

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=theologies+of+ancient+greek+religion+pdf
    • http://files.doublecfarm.net/uploads/1/3/0/7/130740367/3f8095d3f.pdf
    • http://files.chemaroma.com/uploads/1/3/1/8/131856353/sejoberis_zikejinisize_kamaganurudixad.pdf
    • http://files.vwpitstop.com/uploads/1/3/1/3/131380495/8659607.pdf
    • http://files.swrh.co.uk/uploads/1/3/0/7/130738740/zasefojotefux.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/84070763002.pdf
    • https://cdn.shopify.com/s/files/1/0434/0826/1276/files/49563929894.pdf
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/31425321122.pdf
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/beagleboard_x15_schematic.pdf
    • https://cdn.shopify.com/s/files/1/0431/5270/3645/files/22412922831.pdf
    • https://cdn.shopify.com/s/files/1/0430/8130/2167/files/wireless_communication_by_rappaport_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/61280152127.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1272/files/operation_management_krajewski.pdf
    • https://cdn.shopify.com/s/files/1/0433/0533/6985/files/joderixawexijat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdf
    • https://cdn.shopify.com/s/files/1/0427/9857/9879/files/88577250367.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_off0000730c.bin
dd89b4a2b45aa3ab8a03fa898d6b5010b76fcf0c1cd49f5586a1e965339191d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730C 5428 bytes
font_01_sfnt_off00008583.bin
19688969546e85b705438d25e45da930bbb6161257cd437225457dd3a1c5d9b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8583 10048 bytes

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