Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4458c30a1583fee…

MALICIOUS

PDF

38.7 KB Created: 2020-08-19 23:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d3d43a263d7b6f2e6f653f85e8e7dc7 SHA-1: 045b075622025b00df5051ac4f11d8248378539c SHA-256: f4458c30a1583fee72298035f87310a57aaeaeb2de1d7db3c908617d571d1bca
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, disguised with text related to updating Android devices. The document also exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains hosting PDF files. The primary malicious URL identified is ttraff.ru, which is flagged as a 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.ru/pify?keyword=como+atualizar+o+android+samsung+gran+duos
    • http://files.yungschinese.com/uploads/1/3/1/0/131070173/xebofimuzozoto.pdf
    • http://rojetu.alanalight.com/uploads/1/3/1/4/131437736/4014300.pdf
    • https://cdn.shopify.com/s/files/1/0438/4702/4805/files/kerbal_space_program_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31492874922.pdf
    • https://cdn.shopify.com/s/files/1/0429/5789/7882/files/86364666579.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/xenoxisijalubaboxobarut.pdf
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/kafotewonoxukabawazom.pdf
    • https://cdn.shopify.com/s/files/1/0433/1739/5611/files/90456383271.pdf
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/98583971124.pdf
    • https://cdn.shopify.com/s/files/1/0434/1969/7310/files/76889512.pdf
    • https://cdn.shopify.com/s/files/1/0431/8930/5501/files/red_cross_saba.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/bezatagegojasatone.pdf
    • https://cdn.shopify.com/s/files/1/0438/2988/7136/files/ms_sql_developer_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0433/4115/2421/files/voxenumor.pdf
    • https://cdn.shopify.com/s/files/1/0430/9372/1255/files/penowegapulubeg.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_off00005920.bin
013c1109acfe45afd9fc664f41e53d03bb34355e45225cf4e42fa543c638219b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5920 5100 bytes
font_01_sfnt_off00006a5c.bin
1fc2f2328e71de88dc3b9a576c1963d28aca1c26dbb04ec4a7bed3cac91b9574		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5C 10404 bytes

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