Malicious PDF — malware analysis report

Static analysis result for SHA-256 4607a2eae80bafac…

MALICIOUS

PDF

43.1 KB Created: 2020-08-21 08:06:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc1e5e7422722cabc6c58200c5f5ecdf SHA-1: 734b7476279011fd97f6b29076b4b48e73c830a6 SHA-256: 4607a2eae80bafac4f9b78d3ed1a5c0f1d1f505652071641242a22987e656780
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, includes text related to sports standings and the authoring application, suggesting a lure to disguise malicious intent. The primary malicious URL is https://ttraff.cc/pify?keyword=bundesliga+table+standings+and+form, which likely redirects to further malicious content. The presence of many external PDF links, including benign ones on Shopify, indicates a link farm strategy to improve SEO and distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=bundesliga+table+standings+and+form
    • http://wegap.mybordertown.com/uploads/1/3/1/8/131857914/5267569.pdf
    • http://zurifip.veronicaleanos.com/uploads/1/3/1/8/131871390/vizesuxibiduwos.pdf
    • http://nugilodu.jenniferhayesstl.com/uploads/1/3/2/6/132695832/rewuxexotojinabitapu.pdf
    • http://kalumu.chestateeriveradventures.com/uploads/1/3/0/7/130775403/366332.pdf
    • https://cdn.shopify.com/s/files/1/0439/7904/7070/files/zagixun.pdf
    • https://cdn.shopify.com/s/files/1/0433/4367/5560/files/cannot_format_sd_card_read_only.pdf
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/study_guide_and_intervention.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/20876371861.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6566/files/audio_song_breathless_by_shayne_ward.pdf
    • https://cdn.shopify.com/s/files/1/0427/7751/0055/files/troybilt_tiller_manuals.pdf
    • https://cdn.shopify.com/s/files/1/0428/4488/1059/files/rozidopidomopoxudafazino.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/asia_map_countries.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4996/files/teposawigibu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8570/1019/files/muzep.pdf
    • https://cdn.shopify.com/s/files/1/0440/3465/4358/files/level_annuities.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_off00005d1e.bin
cfaed43fc7d12baf0f3089bc7d045609e6ce809d0d5114bd46adf1df4af0b604
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D1E 5416 bytes
font_01_sfnt_off00006f6a.bin
5310ee17306a75db9d527409b3256e92af89ce67fe5aabd4776a094a0eb3ae02
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6A 15060 bytes