Malicious PDF — malware analysis report

Static analysis result for SHA-256 e51af2130f61ea76…

MALICIOUS

PDF

44.5 KB Created: 2020-08-25 21:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86ec25be877ef7cb79d743263882315b SHA-1: fbd8cb106ce93079586e857d5183be7acb6b3f67 SHA-256: e51af2130f61ea766bb65a3db3e5a5d379aa1d574fbab77ad134dee1b27a174d
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=download+kendrick+lamar+maad+city+al'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, also contains the malicious redirector URL. This suggests the primary purpose is to redirect the user to a malicious site, likely for phishing or malware delivery.

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=download+kendrick+lamar+maad+city+al
    • http://fuxupidal.highimpactanalysis.com/uploads/1/3/2/6/132683014/3bbf985c3.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3970/files/bikumozosasejufupijolexe.pdf
    • https://cdn.shopify.com/s/files/1/0458/0625/6294/files/low_back_rehab_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0441/3823/4008/files/88677420051.pdf
    • https://cdn.shopify.com/s/files/1/0434/5482/4598/files/45016220816.pdf
    • https://cdn.shopify.com/s/files/1/0431/5483/3557/files/rarulogokajafepapulijisuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/3888/4519/files/spanish_mackerel_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/1158/7752/files/46362441430.pdf
    • https://cdn.shopify.com/s/files/1/0429/5812/7270/files/sosonakalopubepa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/punubitiwi.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/zuzisojidodinivititatuxez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gekisemegudifusoledo.pdf
    • https://cdn.shopify.com/s/files/1/0438/1795/9586/files/64727662119.pdf
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/jafivusom.pdf
    • https://cdn.shopify.com/s/files/1/0428/4294/7750/files/78192444038.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_off00006e09.bin
5e7d1dbc6a96c59938073cf2023b5423a1395364295dcb476aa027b220643682		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E09 5164 bytes
font_01_sfnt_off00007f9b.bin
1cb31223ebb7ad7e70bfea34bb42cf927e7253665e352c12a53b6dda424ec26e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9B 10980 bytes

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