Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5b45894e982fa16…

MALICIOUS

PDF

40.0 KB Created: 2020-08-20 14:20:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 783189f9a31754e16ca7f903ae995183 SHA-1: ff04a3048b756afbba7cd64ea5dfda229f882068 SHA-256: b5b45894e982fa16d1329a75bb225b658ff08fc61cc0f479f1e4083c74682fbb
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=hazard+identification+report+example`. This URL is likely used to redirect the user to a malicious site. The document also contains a PDF link farm heuristic, indicating a large number of embedded links, many of which point to benign Shopify domains but are likely used to obscure the malicious redirector. The document body text and embedded links suggest a social engineering lure related to a 'hazard identification report example'. No scripts were extracted from this sample.

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=hazard+identification+report+example
    • http://files.kcheartlandconference.com/uploads/1/3/2/7/132740250/savovetuzijag.pdf
    • http://files.booksaregems.org/uploads/1/3/1/6/131607712/945444130f13.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/mabetalukekidijizapomemim.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/tugopuvorakixo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/tixifesure.pdf
    • https://cdn.shopify.com/s/files/1/0440/1440/3742/files/aya_beshen_nude.pdf
    • https://cdn.shopify.com/s/files/1/0436/9698/0136/files/autocad_export_margins.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/39828826521.pdf
    • https://cdn.shopify.com/s/files/1/0447/3644/6613/files/bloons_td_5_apk_data.pdf
    • https://cdn.shopify.com/s/files/1/0437/9167/9639/files/gosobamasofavexuxejumike.pdf
    • https://cdn.shopify.com/s/files/1/0434/5964/1496/files/vezovivero.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6741/files/marupijekizavugipid.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_off000060aa.bin
5f09409edff3f4462203e7de2aab695673d77d3a74b7e199648257f29b61fa20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60AA 5204 bytes
font_01_sfnt_off0000724c.bin
14b970e4d3188c9b66a476895578c2b6385fa1c6a08b38cd918e03dc2abc3583		 pdf-font-stream PDF embedded font (sfnt) at offset 0x724C 9648 bytes

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