Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a3a5a534923721a…

MALICIOUS

PDF

35.6 KB Created: 2020-08-10 13:33:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e05bf91aa28d680a289d9f13574872c SHA-1: 3764b394a1bab50f2d31273ecbcd99948de5a0e3 SHA-256: 1a3a5a534923721abaccec80e7f1d3f24165fdb5007b838f6011ff58153f292b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://ttraff.com/pify?keyword=birdland+weather+report+sheet+music+pdf points to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests that the document is part of a link farm designed to distribute malicious content. No scripts were extracted from this sample.

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.com/pify?keyword=birdland+weather+report+sheet+music+pdf
    • http://files.alissaroca.com/uploads/1/3/1/3/131384777/wuluwute.pdf
    • http://files.katherinewolff.net/uploads/1/3/0/8/130814043/bixadiziruxoranum.pdf
    • http://files.alexandrabischoff.com/uploads/1/3/1/1/131163932/1608275.pdf
    • https://cdn.shopify.com/s/files/1/0434/3280/4504/files/97900093966.pdf
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/ecocardiograma_transtoracico.pdf
    • https://cdn.shopify.com/s/files/1/0428/6152/7206/files/alto_saxophone_pentatonic_scales.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/56659219416.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/oxford_picture_dictionary_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/5680/8607/files/21460789209.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/vulvovaginitis_por_candida_albicans.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5354/files/pisulemavu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6020/8540/files/bitsat_question_papers_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/9559/5938/files/siterekotezixiboda.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_off00004be0.bin
b130e3b0fa347b70050a59141c867dc7f1a6f228dc068fab914d80e1e58cadde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE0 5536 bytes
font_01_sfnt_off00005e8e.bin
050d6ab1e7d320996992cfe8722280f74c47f1cdbd2abe8e9cdd6e69ae087c31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8E 10304 bytes

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