Malicious PDF — malware analysis report

Static analysis result for SHA-256 28240f17409751a9…

MALICIOUS

PDF

40.9 KB Created: 2020-08-06 08:37:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96f80c2dcd290e41860bc264268bea4c SHA-1: e0a23e955d70146bcf92a0d0dc5dea787efc2167 SHA-256: 28240f17409751a9c11f47a368a694b625dde53a03d08be589291f7339117c3b
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a meal plan PDF. This redirector likely leads to further malicious content or exploits. The PDF also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO poisoning attempt to increase visibility of the malicious content. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=renaissance+periodization+meal+plan+pdf
    • http://files.learnwithmmg.com/uploads/1/3/2/8/132814427/xoxuvugekot_sojitide_wavejopibu_wurixazofawik.pdf
    • http://files.yonemoto.com/uploads/1/3/1/4/131453897/545605.pdf
    • http://files.edaumarchitect.com/uploads/1/3/1/3/131378950/4918198.pdf
    • http://files.sgteachersassociation.com/uploads/1/3/1/4/131409305/8228693.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/66072424777.pdf
    • https://cdn.shopify.com/s/files/1/0428/7220/9574/files/56229058425.pdf
    • https://cdn.shopify.com/s/files/1/0432/1889/5010/files/660583091.pdf
    • https://cdn.shopify.com/s/files/1/0435/1390/5311/files/fujipupugo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/bumowokopinuf.pdf
    • https://cdn.shopify.com/s/files/1/0437/6353/1933/files/xaneputato.pdf
    • https://cdn.shopify.com/s/files/1/0432/8872/3616/files/1719141585.pdf
    • https://cdn.shopify.com/s/files/1/0437/3990/6197/files/present_simple_exercise_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/34743508718.pdf
    • https://cdn.shopify.com/s/files/1/0450/2038/1342/files/a_journey_through_anglo_american_literature_learner_s_material.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/accounting_standard_12.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/54532915369.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_off000060ff.bin
80d7b009e8e74e238ced1fd2d97ffefbdeb778c4b3c73ddcef09d862b20cf99f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60FF 5360 bytes
font_01_sfnt_off00007331.bin
19ed347c55eeb51482e4d7f8663d49a6671ae40f0876dc2d98d63701d1bb5caf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7331 10480 bytes

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