Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30e166ecf8487f1…

MALICIOUS

PDF

65.4 KB Created: 2020-08-31 03:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a2e543ce03539e97d23c161e5e16a31b SHA-1: 8cf32adbfd35803bdc7daef25094522784e5a453 SHA-256: c30e166ecf8487f1d92444505532340b290f4cfb9242f3b7d16922c803af79ca
150 Risk Score

Malware Insights

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

The PDF contains a direct link to a known malicious redirector, ttraff.com, which is disguised as a Kundalini yoga PDF in Kannada. The PDF also contains a large number of external links, many hosted on Shopify, likely as part of an SEO link farm to improve search engine ranking for malicious content. The ML classifier strongly flagged this PDF as malicious.

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.com/wix?keyword=kundalini+yoga+pdf+in+kannada
    • https://cdn.shopify.com/s/files/1/0429/7742/7609/files/14514867915.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2243/files/probability_and_statistics_for_engineers_and_scientists_solution_manual_9th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/580813539.pdf
    • https://cdn.shopify.com/s/files/1/0428/9822/7353/files/furigof.pdf
    • https://cdn.shopify.com/s/files/1/0431/6400/8605/files/annotate_android_stylus.pdf
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/jufejimoketexovubeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/3841/6801/files/wonaga.pdf
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/xokalukamum.pdf
    • https://cdn.shopify.com/s/files/1/0440/4209/2694/files/gold_coast_weather_report_14_days.pdf
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/dozorikewinojidedape.pdf
    • https://cdn.shopify.com/s/files/1/0446/6583/1577/files/longman_academic_writing_series_1.pdf
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/56151524084.pdf
    • https://cdn.shopify.com/s/files/1/0430/2818/5239/files/17401589650.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/pabonopofi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b486.bin
c3f6175747affbc2ac9442b08c9fc85efd1d26d6cd104cb975e8fb0b815e53dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB486 5072 bytes
font_01_sfnt_off0000c5f1.bin
93e7b78e875f812b158c5077fbfd1bb0cde49424e48fb7a2221d1f8135ed8d91		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F1 11584 bytes
font_02_sfnt_off0000eb3a.bin
c17c4db5b476b0543301b095c46f7a1c5665a0c806028776841dfeb4cf91a104		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3A 3272 bytes

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