Malicious PDF — malware analysis report

Static analysis result for SHA-256 b44ee248801cf542…

MALICIOUS

PDF

44.4 KB Created: 2020-08-14 12:29:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90eea3617346aba65c8925b5e7c984d3 SHA-1: 34cd53334f0a52fa0fc0eb61ba82ddf5c157ee94 SHA-256: b44ee248801cf54211067afb79e9de053944d5d49b241bf076490d6ab6ffd1ce
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO manipulation. One critical heuristic identified a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=android+auto+wireless+hyundai'. This redirector is likely used to obscure the final malicious destination. The document body, though heavily corrupted, contains the same lure text and URLs, reinforcing the malicious intent.

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=android+auto+wireless+hyundai
    • http://files.militarymovieprops.com/uploads/1/3/1/4/131407958/c35cdb830df77.pdf
    • http://files.watchmarketreview.com/uploads/1/3/1/3/131379894/ruvuxafuziz.pdf
    • http://files.bayfieldgardens.com/uploads/1/3/0/7/130775126/bobajaxezewifivo.pdf
    • http://gogenalel.kathrynfree.com/uploads/1/3/0/8/130874133/717e5e87642cb43.pdf
    • http://files.goochipoochi.net/uploads/1/3/1/1/131164076/bejorifojufeb.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/wofotivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2186/files/vimazilizada.pdf
    • https://cdn.shopify.com/s/files/1/0431/9019/0248/files/20628634387.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/19373147713.pdf
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/13165108609.pdf
    • https://cdn.shopify.com/s/files/1/0445/6205/5332/files/patofisiologi_orchitis.pdf
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/mijaxepijanofutorireridu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5220/3161/files/teoria_finalista.pdf
    • https://cdn.shopify.com/s/files/1/0432/4157/0459/files/14593733396.pdf
    • https://cdn.shopify.com/s/files/1/0433/8008/0801/files/bypass_gastrico_en_y_de_roux.pdf
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/zavufolu.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_off00006e8d.bin
819961b5c873bb497f999952e52a5d0b38e3784df3b261e90f61d82b3897ea33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E8D 5096 bytes
font_01_sfnt_off00007fe4.bin
c88eece74b4552a234d2b1c3d650e2cc864502b10269c6dc817b11d57f149088		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE4 10712 bytes

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