Malicious PDF — malware analysis report

Static analysis result for SHA-256 89cd60593aaed9b8…

MALICIOUS

PDF

38.9 KB Created: 2020-08-10 04:57:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9395a12dd4e16dd7433010de895d510a SHA-1: a2b14252bb8661ccfc8a4bc0591a9844b9c84e14 SHA-256: 89cd60593aaed9b81f1b7d90603bde3c15622c221a8f5cc550d4ba76d1952950
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure. The 'PDF_SEO_LINK_FARM' heuristic suggests a large number of outbound links, many pointing to Shopify, likely to obscure the malicious intent and improve search engine ranking for malicious content. The document body contains a URL that appears to be the target of the redirector.

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=additive+and+subtractive+bilingualism+pdf
    • http://files.itsnotaboutthesexmyass.com/uploads/1/3/1/6/131637016/474cc.pdf
    • http://files.bdavidduncanartist.com/uploads/1/3/1/1/131163516/829ebbc679ed8c9.pdf
    • http://files.simplicityjiujitsu.com/uploads/1/3/0/7/130775518/nodoj-gapebobevumaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/88521998714.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8076/files/causative_verb_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/47142128986.pdf
    • https://cdn.shopify.com/s/files/1/0437/3928/3608/files/wuxofifovigeguginebuwef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3215656586.pdf
    • https://cdn.shopify.com/s/files/1/0438/2438/2114/files/14273795145.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/pomexakizeluvufedinup.pdf
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/jeginizagafuvuzelu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8773/8533/files/87133550682.pdf
    • https://cdn.shopify.com/s/files/1/0430/4925/5066/files/raxemalaforim.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_off00005a97.bin
49c6d74e45791fe693cf1c5e9e40493918c83bff0da04cc7836013e27f1d34da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A97 5664 bytes
font_01_sfnt_off00006dc9.bin
ef769891c6311e602c0a3deebbce17f285cd1cc53e2191df4e67901169fa8a42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC9 9716 bytes

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