Malicious PDF — malware analysis report

Static analysis result for SHA-256 581e264d616b2f7e…

MALICIOUS

PDF

51.3 KB Created: 2020-08-19 11:22:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46f26f6b78f7e353769c37c9c0f6b339 SHA-1: 6795fbc9c7d64f111064c19c8bbb9d3a0b0d1d92 SHA-256: 581e264d616b2f7e4ff36e976f0523d2c907abd4697f3d2d2f3e0857d92a8196
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link and a link farm, indicating it's designed to redirect users to malicious sites. The document body, though partially corrupted, contains text related to a 'leave application format' and the malicious URL, suggesting a social engineering lure. The primary malicious URL is https://ttraff.ru/pify?keyword=leave+application+format+for+school+in+word, which is likely used to redirect users to further malicious content.

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=leave+application+format+for+school+in+word
    • http://files.bostonareamaskinitiative.com/uploads/1/3/1/4/131453998/9385768.pdf
    • http://files.nepstatecups.com/uploads/1/3/1/6/131606072/lejilefewasedorulop.pdf
    • https://cdn.shopify.com/s/files/1/0433/7998/2492/files/lelomorituvalavolazuza.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/67659546697.pdf
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/24969093311.pdf
    • https://cdn.shopify.com/s/files/1/0435/7364/1379/files/movimiento_circular_uniforme_variado_wikipedia.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5395/files/63338959586.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/bjt_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/28051875081.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6802/files/dazolemuxozava.pdf
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/39932899626.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/celina_isd_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0433/9426/9333/files/86580854491.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wurawosupamajo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8917/files/95749224154.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/perapef.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_off00007b50.bin
673c220b607b7fdda54e79f6a8f71ed0ceaf1f0b4391db453589c51ae9c7779a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B50 5488 bytes
font_01_sfnt_off00008de5.bin
0894a04cf7f8f92a467b9b996b0e5d99c425572420950fef86bcf32bf09398d4
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE5 10332 bytes
font_02_sfnt_off0000b183.bin
09aa00e25761da474566988180e431b3239a27b8adc736c7b38e90b30afc6b88
pdf-font-stream PDF embedded font (sfnt) at offset 0xB183 3748 bytes