Malicious PDF — malware analysis report

Static analysis result for SHA-256 efa0f4aae7f9e6fb…

MALICIOUS

PDF

51.6 KB Created: 2020-08-19 02:30:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66881b808e578188392a518194b5ada6 SHA-1: 26d376dcfff8a54c758ffdafab53c372c509698c SHA-256: efa0f4aae7f9e6fb1cd40be63030cad14809f6826efaf87d1fcf01d7dc04064c
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One of the embedded URLs, 'https://ttraff.ru/pify?keyword=singh+is+bling+movie+songs+ming', is flagged as a known malicious redirector. The document body contains garbled text along with several URLs, reinforcing the link farm heuristic. The primary intent appears to be directing users to potentially harmful websites through a deceptive link farm.

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=singh+is+bling+movie+songs+ming
    • http://sozapipi.artinuum.com/uploads/1/3/1/1/131164250/dudipipire.pdf
    • http://lirefegam.emeraldparkptsa.org/uploads/1/3/1/0/131071231/taximodam.pdf
    • https://cdn.shopify.com/s/files/1/0448/0283/4594/files/company_introduction_letter.pdf
    • https://cdn.shopify.com/s/files/1/0437/7349/3406/files/21725924767.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86187089948.pdf
    • https://cdn.shopify.com/s/files/1/0432/8764/2270/files/descargar_acuerdo_gubernativo_89_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/8359/4917/files/astm_b117_11.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/jisenexawiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/47583311474.pdf
    • https://cdn.shopify.com/s/files/1/0436/6427/7657/files/maruti_800_carburetor_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88020392138.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3873/files/33084073913.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/lancaster_craigslist_org.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_off0000777f.bin
90620839c7a76881741f70dc8e3c9752bc0bca9ae1081a796ef652783998b12b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x777F 5096 bytes
font_01_sfnt_off000088b0.bin
383f98636e35889c524f89425e8df416d0ac0989b68f0a395ba53f085b3e301e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B0 10316 bytes
font_02_sfnt_off0000ac31.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC31 16164 bytes

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