Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5d4ee058636548…

MALICIOUS

PDF

45.9 KB Created: 2020-08-10 18:48:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abb1c955655161fcecd008f73e6d4fdd SHA-1: 51b7453e860dd1c876f6b801f0f1c493351ce113 SHA-256: 2d5d4ee05863654847f41851b8f5859668c1be9a1653615b233a13b04fffec3d
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains a URL that appears to be the same malicious redirector. This suggests the document's primary purpose is to trick users into visiting a malicious site via a deceptive link.

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.cc/pify?keyword=c+language+interview+questions+and+answers+for+experienced+pdf
    • http://files.eliteladiesfashion.co.uk/uploads/1/3/0/7/130776536/ac058b1a.pdf
    • http://files.nileswesttheatre.com/uploads/1/3/2/6/132681884/d4f856104436006.pdf
    • http://files.tmbrepairs.com/uploads/1/3/2/6/132682790/774155.pdf
    • http://files.highschoolspanish.org/uploads/1/3/0/7/130739393/lejujuwirofixe.pdf
    • http://xidevus.whitewillowtea.com/uploads/1/3/0/8/130874493/jolezilozot-zutinififera.pdf
    • https://cdn.shopify.com/s/files/1/0437/1569/0650/files/difference_between_ethics_morals_and_values.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vaxopegi.pdf
    • https://cdn.shopify.com/s/files/1/0443/0397/4556/files/radio_rossii_chita_32_aac_radio_logo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/sajigajix.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/tomonewe.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/fuluxaxafiwi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7406/8390/files/88443920006.pdf
    • https://cdn.shopify.com/s/files/1/0436/7391/1449/files/vebagurixobixopob.pdf
    • https://cdn.shopify.com/s/files/1/0430/4008/0025/files/56920141849.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3545/files/36352182711.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1927/files/dudamofivezedawalenejupik.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_off00007401.bin
01a22c5f9138d3b2e4657c92b1fb0826d3bc665c17f2746fcb1e90a50be1ce27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7401 5576 bytes
font_01_sfnt_off0000871b.bin
7932ac165b6dc80e88f8e2e4be71f0ed78d2c06996a22b04fe57a3e2d56aeb25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x871B 10300 bytes

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