Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcd33f7f726f4e60…

MALICIOUS

PDF

40.9 KB Created: 2020-08-04 10:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82abc6abf29b50eb52a478b3f02dc8f9 SHA-1: 84efb17d72da0913a480aeaebf425ca2aa38a172 SHA-256: dcd33f7f726f4e60ef29e43ec18cd8b560cf8fb1cfd1e4e8fb275120af6d210d
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with the primary heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. The presence of a link farm suggests an attempt to distribute malicious content or conduct phishing operations.

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=isometric+view+exercises+pdf
    • http://famifivev.dad2atria.com/uploads/1/3/0/7/130738943/sutilasunuba-pulewa-derinozor-sanimafiledivi.pdf
    • http://files.edhgs.com/uploads/1/3/1/4/131408529/lujaremokike_nezuki_derunelizaxeti_kelabij.pdf
    • http://files.cikrefurbished.com/uploads/1/3/0/9/130969987/2256908.pdf
    • http://files.cherrycitycloggers.com/uploads/1/3/0/7/130775753/2578104.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/vefaz.pdf
    • https://cdn.shopify.com/s/files/1/0435/5352/1823/files/fisola.pdf
    • https://cdn.shopify.com/s/files/1/0434/7396/1110/files/wemevatexixiwamu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wizivudid.pdf
    • https://cdn.shopify.com/s/files/1/0440/9769/9992/files/tefef.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3749/files/83590010261.pdf
    • https://cdn.shopify.com/s/files/1/0432/0372/3428/files/mogopatoxek.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/39057185038.pdf
    • https://cdn.shopify.com/s/files/1/0437/0645/0074/files/95438644875.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/tuzefan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9999/6839/files/fallout_4_workshop_framework.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/boxasipododazewizukata.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_off0000623c.bin
0b7eb4ec46d92869293e1313a02fb803d8e9f03a103fc9748110b7aeff9264da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623C 5216 bytes
font_01_sfnt_off000073ff.bin
828b01e56f396fd3342816568f8e19801775eb02089763eccf4e5aca44771b2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FF 10136 bytes

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