Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f3fde6811e3f344…

MALICIOUS

PDF

47.1 KB Created: 2020-09-20 04:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51082de3f94fbb8f451ce14ac8e7ae38 SHA-1: 949e01cedc5a9510b529fbc593e03817d1a5284b SHA-256: 9f3fde6811e3f344ba215cc5b4b67d4db04d72ca25c201ead236afd99e4e5fb3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.link/wix?keyword=apply+exponent+properties+involving+products+worksheets', points to a known malicious redirector. The document body, though heavily obfuscated, also contains URLs that are part of this link farm, suggesting a phishing or malicious redirection attempt.

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.link/wix?keyword=apply+exponent+properties+involving+products+worksheets
    • http://gibunimi.extrodinarysolutions.net/uploads/1/3/1/3/131380213/gezik-rametafivaloko.pdf
    • http://tenop.engagewithease.com/uploads/1/3/1/3/131379732/xijonalese.pdf
    • http://files.ok123plus.com/uploads/1/3/0/7/130775712/ratetedijibasen.pdf
    • http://xejam.vertsdispensary.com/uploads/1/3/1/4/131409090/327f51f5e64e39.pdf
    • https://cdn.shopify.com/s/files/1/0434/3899/7669/files/38939683257.pdf
    • https://cdn.shopify.com/s/files/1/0435/1809/9615/files/bigamakezenajetujigujob.pdf
    • https://15e74088-69e9-4a9a-bebc-ca8c6d8dc805.filesusr.com/ugd/011e4b_50e6a9d3c22f4e9cb084b534437de635.pdf?index=true
    • https://3f3981c3-f18a-42c0-b118-72836b7367d0.filesusr.com/ugd/ca9b0a_bd057bacaa8447efabccb54a0e64d639.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0440/3009/9606/files/minelexesurivoredosi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/senepaxezewewavunaduxisar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdf
    • https://cdn.shopify.com/s/files/1/0429/9299/2410/files/43775064469.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_off0000604f.bin
301107b1a478450209b6359a178009f91938a3b54b624318955057f8ad320005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x604F 5500 bytes
font_01_sfnt_off00007329.bin
8a680f3b48c8c0e580690c0ee43b1e04bc384610d91b99c105c1d09f5ba14c43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7329 10948 bytes
font_02_sfnt_off0000989c.bin
7ae28dcc91460e622aa735cdcc650296126eb8066f23c167d1446cd4c2f65e4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x989C 16520 bytes

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