Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe6af0c474726f4…

MALICIOUS

PDF

42.3 KB Created: 2020-08-06 22:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 727d19f9253c9b9076b745941f25d7c9 SHA-1: 72c33447df244f4dbce35bb8b15c95cf3976931f SHA-256: 4fe6af0c474726f483da282ff6217e1f3a53ffb418419aef1765f22b128bb980
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link, specifically 'https://ttraff.ru/pify?keyword=alumina+processing+properties+and+applications+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted from this sample.

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=alumina+processing+properties+and+applications+pdf
    • http://durebuwo.911sim.com/uploads/1/3/0/7/130776644/278b8090a461f.pdf
    • http://files.faithkingwriter.com/uploads/1/3/2/6/132696112/tobibinunalud_gefogujagezuvo_dajen.pdf
    • http://files.dreampartiesnl.com/uploads/1/3/0/9/130969190/vujazeb_repejeziwuwa_gawufixifop.pdf
    • http://zezulavaf.marianimediation.com/uploads/1/3/1/4/131482952/dc71272c35ea.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/94509442843.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/54174477859.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/pebenilorogusikas.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/jimedusos.pdf
    • https://cdn.shopify.com/s/files/1/0433/6756/3418/files/80706301876.pdf
    • https://cdn.shopify.com/s/files/1/0434/3136/2725/files/half_life_1_bind_commands.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1320/files/68101463400.pdf
    • https://cdn.shopify.com/s/files/1/0436/6961/8841/files/wojamevazi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/nizubufofusibojawateji.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/zujosade.pdf
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/31257770219.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/wajaraxikar.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_off00006676.bin
33b5e20a8fc73df04dfb5f634eae69aa7d524666c5c7d36b5f5bf543bb4c466c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6676 5464 bytes
font_01_sfnt_off000078f0.bin
0f14d67c50d54aa9d08d0f0c170d2f540b33f57ef940f04804605871d42301d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F0 10196 bytes

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