Malicious PDF — malware analysis report

Static analysis result for SHA-256 43ba096a499883e9…

MALICIOUS

PDF

44.3 KB Created: 2020-08-19 21:17:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 406b28efdf44c8524a83dc9f817423eb SHA-1: 5338c308002722b10ac20c21db745ddd2a1ebdcc SHA-256: 43ba096a499883e9c52a2c3b3649180acad4486b007dad26d13b2a02c7210800
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=naar+dana+anar+dana+song', which is flagged as malicious. Additionally, a large number of PDF links were detected, with 'https://cdn.shopify.com/s/files/1/0432/0886/8008/files/14571204208.pdf' being the first in the list. This suggests a link farm or redirection strategy to a malicious destination.

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=naar+dana+anar+dana+song
    • http://files.lion-chemical-stores.co.uk/uploads/1/3/0/8/130814232/8001bb1.pdf
    • http://fifino.drvegetableinc.com/uploads/1/3/2/3/132302868/85ad8af17809.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/14571204208.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdf
    • https://cdn.shopify.com/s/files/1/0449/2269/9943/files/91339033376.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/tudijimas.pdf
    • https://cdn.shopify.com/s/files/1/0434/4902/4669/files/66542452422.pdf
    • https://cdn.shopify.com/s/files/1/0434/4761/5649/files/gunflint_lake_weather_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/nadipubewi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/soul_calibur_4_free.pdf
    • https://cdn.shopify.com/s/files/1/0450/0835/5486/files/graduation_party_invitation_templates_publisher.pdf
    • https://cdn.shopify.com/s/files/1/0433/4803/3689/files/2011_ford_escape_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/4049/6033/files/34600699221.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_off000061b0.bin
73689b85d6f4a64937c3a019b4d3fa8c86ed440571a6bde65c19e605413ae376		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B0 4928 bytes
font_01_sfnt_off00007285.bin
2a49347faa003d5a4952eb587c16748481992d9887caa7c65d5d57de07d3d0cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7285 16616 bytes

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