Malicious PDF — malware analysis report

Static analysis result for SHA-256 335ed9cf2d766924…

MALICIOUS

PDF

39.6 KB Created: 2020-08-20 13:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91266c398a813316d316e85cc3952bcf SHA-1: ffbb5c03cbb147aaf7d10f0cb048395507cf0d9e SHA-256: 335ed9cf2d766924d7d51f6eacc1f9d085f71e5fcee6c9d3112b454219549e86
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing a 'Donnelly weather report' and includes the malicious URL. This suggests the document is a lure to redirect users to malicious content.

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=donnelly+weather+report
    • http://lapigugep.gandecollective.com/uploads/1/3/2/6/132681333/nokexip.pdf
    • http://paxaj.yannispizzeriadeerfield.com/uploads/1/3/1/6/131637814/bejawozule_tusuruwerikew.pdf
    • http://files.makeupbysarahe.com/uploads/1/3/0/7/130739826/08f8b5b.pdf
    • http://jigesit.eliterecuperativecare.com/uploads/1/3/0/9/130969723/1dc5a840.pdf
    • http://zojanop.dedethford.com/uploads/1/3/1/4/131410399/444bc6cce2.pdf
    • https://cdn.shopify.com/s/files/1/0429/7703/4399/files/character_certificate_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5510/files/abstract_wallpaper_4k_apk.pdf
    • https://cdn.shopify.com/s/files/1/0432/5962/5627/files/vokozakako.pdf
    • https://cdn.shopify.com/s/files/1/0433/7840/9622/files/31631717136.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8554/files/bengal_tiger_songs_ravi_teja.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/nozaduzokaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/5772/3030/files/agile_web_development_with_rails_4_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7456/7843/files/horizontal_and_vertical_translations_of_functions_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/jemasaka.pdf
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/nirusud.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/58445927536.pdf
    • https://cdn.shopify.com/s/files/1/0428/9308/2783/files/xabewunowajifuv.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_off00005825.bin
de85b31dc521816f10163d00421cf99f3f35171effb8228f40490c7a89af47a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5825 4920 bytes
font_01_sfnt_off000068f5.bin
9f24d024be041133dc5e345f9c0764118d01d099bff659bdf344de0fd4f19b75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F5 12832 bytes

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