Malicious PDF — malware analysis report

Static analysis result for SHA-256 2517b68c6b53e6cd…

MALICIOUS

PDF

57.7 KB Created: 2020-08-12 18:50:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f814894a2004b20538aaf256ea7e349 SHA-1: e14ad67b3974abb73c9775f6319049e0774063e0 SHA-256: 2517b68c6b53e6cd7deb18bcdabdd2232b2096ac832543876bf2d599c39a9a0b
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to further malicious content. The document body and embedded URLs suggest a tactic of creating numerous PDF files with SEO-friendly slugs hosted on benign platforms like Shopify, but ultimately linking to the malicious redirector. This indicates a link farm or SEO poisoning attack designed to attract unsuspecting users.

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/wb?keyword=penatalaksanaan%20hepatoma%20pdf
    • http://kinojem.archildrensbookpublishing.com/uploads/1/3/1/0/131069839/2978579.pdf
    • http://xepazeked.zenlockyt.com/uploads/1/3/1/3/131380600/pusotitojesu-lokiwaxetife-bipenigefu.pdf
    • http://files.lifewayjrhighministry.com/uploads/1/3/0/9/130969061/19a931343f777a.pdf
    • http://laxevu.deefitzsimmonsphotography.com/uploads/1/3/1/3/131380005/5440442.pdf
    • http://files.statenislandsolarcar.com/uploads/1/3/1/3/131398332/43ea042360d.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/9005942949.pdf
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/lumasaxujejobetakevowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0826/files/33328721158.pdf
    • https://cdn.shopify.com/s/files/1/0434/0101/9548/files/merger_and_acquisition_accounting.pdf
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/descriptive_writing_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/vonukabikipi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/81173546682.pdf
    • https://cdn.shopify.com/s/files/1/0430/5161/4359/files/xobakemosilunomisekejubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4940/9960/files/advertising_case_study_noun.pdf
    • https://cdn.shopify.com/s/files/1/0436/1958/2110/files/almanach_hachette.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/gotesodezoxelunemazazix.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_off000097c1.bin
4f1c64db1c4f3e1e3d948c6d09aa62c3e9a608cc3afac9af6e2cbe199eec0958		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97C1 5248 bytes
font_01_sfnt_off0000a975.bin
85037068f04a94dbbee4905ed0910a66662ed9a51e3d19b55a543bd4b1167195		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA975 14996 bytes

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