Malicious PDF — malware analysis report

Static analysis result for SHA-256 883a47fede77c9e6…

MALICIOUS

PDF

37.8 KB Created: 2020-07-08 19:10:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f1c4d6fb0159d0a839ae9c51754acf8 SHA-1: 098b0d10015560b4f12008a2b508d5ef649eb6d9 SHA-256: 883a47fede77c9e6006bfc893cb370638e0e08e26cfd5c583142b9f3eafb9fc9
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified as a link farm, designed to redirect users to malicious infrastructure. The primary lure uses keywords related to a 'Kenmore sewing machine manual' to entice clicks. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the initial redirector URL, indicating a high likelihood of malicious intent. 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.ru/wb?keyword=kenmore%20sewing%20machine%20model%20385%20manual%20pdf
    • http://files.striba.net/uploads/1/3/1/3/131380413/9297027.pdf
    • http://files.harborlandscape.net/uploads/1/3/0/8/130813768/b916affddd4d61.pdf
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdf
    • http://files.hkcofc.com/uploads/1/3/2/6/132683111/lobojevaresale_jojolurirukekof_nunaduwarutare_rulilik.pdf
    • http://files.ifobookmarks.org/uploads/1/3/2/6/132696263/juvalezibanuni_dotuvopunojug_kelirixugex.pdf
    • http://files.annaduttonbridalcouture.com/uploads/1/3/2/6/132681281/pugivuzaxifow.pdf
    • http://files.thucsnet.org/uploads/1/3/0/9/130969907/950174ad0.pdf
    • https://taxowedolez.files.wordpress.com/2020/07/mobiwisovum.pdf
    • https://pimekib.files.wordpress.com/2020/07/60202856459.pdf
    • https://zitipon.files.wordpress.com/2020/06/17969271942.pdf
    • https://bedipivi.files.wordpress.com/2020/06/gomesuwutafunavulusukak.pdf
    • https://zonaselid117862540.files.wordpress.com/2020/06/gaxonoposanuwo.pdf
    • https://sixarunap.files.wordpress.com/2020/07/83178943336.pdf
    • https://mebanebezog.files.wordpress.com/2020/07/fiwudujafafapikanadopaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65069223210.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.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_off00004fb3.bin
e3c58db3ce2e005ea1083d4bb514ba81916f951c0c9df809e33d4ce6131c2131		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB3 5912 bytes
font_01_sfnt_off000063ae.bin
e989bbfdb3ffb68585342995dc65fceb06a5a8df15db1c323e561cd7080d9323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 12184 bytes

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