Malicious PDF — malware analysis report

Static analysis result for SHA-256 a994c757697141fd…

MALICIOUS

PDF

52.0 KB Created: 2020-08-20 08:51:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cb78dc1f5a3825aa2ebd498f559af3c SHA-1: b837c9defd78a80d192b604931c10b280706d858 SHA-256: a994c757697141fd71f250258c6270c832e44c3f9e191162812f02499e495ae3
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely used to funnel users to further malicious content. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on cdn.shopify.com. The primary malicious link is https://ttraff.ru/pify?keyword=ben+10+alien+force++episodes, which is presented in a context suggesting it is related to 'Ben 10 alien force episodes'.

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=ben+10+alien+force++episodes
    • http://vuxudomu.sbdayschool.com/uploads/1/3/0/7/130739695/00128290.pdf
    • http://gemuze.pittsburgseafoodandmusicfestival.com/uploads/1/3/1/4/131410227/nezevo.pdf
    • http://files.seizediem.com/uploads/1/3/1/4/131438741/vewim_gifesimefipotu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/tulumijuvugi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/mikutawosaba.pdf
    • https://cdn.shopify.com/s/files/1/0434/6983/2354/files/59582540142.pdf
    • https://cdn.shopify.com/s/files/1/0429/0438/7750/files/66074854978.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/descriptive_research_sample_thesis.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/zezizajezalurodusakixoxap.pdf
    • https://cdn.shopify.com/s/files/1/0430/7750/1079/files/29386601387.pdf
    • https://cdn.shopify.com/s/files/1/0428/7932/0223/files/ledixojagamude.pdf
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/amma_nanna_songs_telugu_naa.pdf
    • https://cdn.shopify.com/s/files/1/0431/7321/6411/files/wazubazeguwebogonunele.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_off0000834f.bin
107db6dc3974b94542ed60852e5e7560f85cf958a7bbf12b15d3490e1fb2146b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 5392 bytes
font_01_sfnt_off000095b6.bin
046a2b7b6e8f4b525f751bdce3b76665dd3edab3a2a5160d8279f83fcd7fe75c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95B6 14664 bytes

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