Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2adb05dd6ef5f59…

MALICIOUS

PDF

44.1 KB Created: 2020-08-29 05:19:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54435e80a294c36c9d45fe0706afc9f3 SHA-1: 74bcbf554ea9fd3725d7a7c65e61c42e4068f903 SHA-256: f2adb05dd6ef5f5933a7f211becbb236ab8bca108364ddba55716d56a20a4baa
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-optimized lures. One prominent link, 'https://ttraff.cc/wix?keyword=sine+and+cosine+rule+worksheet+tes', is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, and the document body is heavily obfuscated.

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.cc/wix?keyword=sine+and+cosine+rule+worksheet+tes
    • https://cdn.shopify.com/s/files/1/0429/3633/6551/files/8343267453.pdf
    • https://cdn.shopify.com/s/files/1/0432/6975/0944/files/98127220045.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/55522662142.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0336/files/53647226849.pdf
    • https://static.usrfiles.com/ugd/b8c837_07ae4d5ac7b649f79233036d94ac269c.pdf
    • https://static.usrfiles.com/ugd/b8c837_1426225cefd9417493bf0331e6b88b03.pdf
    • https://static.usrfiles.com/ugd/b8c837_477c75490c834932864782714d755fdd.pdf
    • https://static.usrfiles.com/ugd/b8c837_65107c90225148b7ab58151f91e311ad.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/sazejumofenesisefunofar.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/42378221043.pdf
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/mezirupexejab.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/year_1_maths_addition_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/basic_quantitative_aptitude_questions_and_answers_with_explanation.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_off00005fe2.bin
738056a53770158e1f739760a2b0d217457d338aadfdeb7bba63cb36fbf2a8df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE2 5168 bytes
font_01_sfnt_off0000716c.bin
3af86622eb9e0ecc4ee61db256fd2dd9577f6451660d735ab6594db3b1a3d6f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x716C 10532 bytes
font_02_sfnt_off0000956e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x956E 4324 bytes

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