Malicious PDF — malware analysis report

Static analysis result for SHA-256 da26030a4f46368f…

MALICIOUS

PDF

38.4 KB Created: 2020-08-17 14:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b207a0a7143ee1cc1670377168d257a SHA-1: fa4e50787afccf10edc23e77ae3ee1c385fdba3a SHA-256: da26030a4f46368f9d604edc2cabfe5c7150d704803156f1b487d77de5b59d25
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the string 'Ballot paper 2019 pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources.

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=ballot+paper+2019+pdf
    • http://pojog.magsolutionsltd.co.uk/uploads/1/3/0/7/130776089/xozizesasogazun_zukojanu_gapixaxufesuzav.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53975554289.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/afinidades_electivas.pdf
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/76389470212.pdf
    • https://cdn.shopify.com/s/files/1/0433/6189/4565/files/barron_toeic_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/voguxolelerejiset.pdf
    • https://cdn.shopify.com/s/files/1/0429/3633/6540/files/jadiso.pdf
    • https://cdn.shopify.com/s/files/1/0434/5161/3334/files/20217973871.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/52972374212.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/80724902163.pdf
    • https://cdn.shopify.com/s/files/1/0439/2920/6952/files/2900675935.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_off00005898.bin
62dc51741e0b51387f8fb43e6b4afb79aa3ceff27bec1680ace42afc1433125d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5898 5388 bytes
font_01_sfnt_off00006af9.bin
657c7b54e63f93f870947e52dc7d01984ad093676ba6b09ed9d348a518a4059c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF9 10112 bytes

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