Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedff6ebcb5c2836…

MALICIOUS

PDF

51.0 KB Created: 2020-08-05 07:21:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f12b5219d59b5955489530f93e943d8 SHA-1: e0cf2c00d7d9584bae9d96b849f25cadb835ddf8 SHA-256: bedff6ebcb5c283669b474f1757f80de20cc5972102e3adfe14330a7dfb07ec8
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to what appears to be a link farm designed for SEO manipulation. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=la%20robotisation%20du%20travail%20pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=la%20robotisation%20du%20travail%20pdf
    • http://files.robertuspudyanto.com/uploads/1/3/1/4/131453810/2292643.pdf
    • http://boneze.saalt.org.za/uploads/1/3/1/0/131070356/1386020.pdf
    • http://files.atlprorepair.com/uploads/1/3/0/7/130739202/fabalebasexe_vasiz_timogetukipupe_kowuxirinigu.pdf
    • http://files.alkistis.net/uploads/1/3/1/4/131438071/movumogak-majize-vimuwukaganuz-geviwibudebi.pdf
    • http://files.yaginoodles.com/uploads/1/3/1/0/131070539/8994577.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/63627089541.pdf
    • https://cdn.shopify.com/s/files/1/0432/2384/2983/files/83089741613.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/mejufesarojoluva.pdf
    • https://cdn.shopify.com/s/files/1/0434/5764/2648/files/agnes_grey_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/python_tcp_server.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/15167537236.pdf
    • https://cdn.shopify.com/s/files/1/0430/9902/9655/files/63355550603.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/ripivolufu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/simifalitinepimatog.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/90085310849.pdf
    • https://cdn.shopify.com/s/files/1/0433/3430/3912/files/74526988780.pdf
    • https://cdn.shopify.com/s/files/1/0432/0729/5140/files/safapo.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_off00008539.bin
41dd93b5eee9be2f2ec3e032b0e0041a91f29eb6b1b9879f0dd20f6db0f54b12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8539 5176 bytes
font_01_sfnt_off000096e4.bin
b2d16e88b61eb754907a4178048ee530310a7c89523bf8a4991b08f85ae2c1c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96E4 12304 bytes

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