Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df2e649279d2df3…

MALICIOUS

PDF

39.2 KB Created: 2020-08-19 01:21:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b101ceeec9104d9c0a980280ba93f470 SHA-1: 63b9a5156988aa06819d5bf40a1fe40d86f22c50 SHA-256: 1df2e649279d2df3c5f5ea4e260a2b31e2de73c4b933c8fef22951a7d154bdee
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body also explicitly contains this URL, along with a URL to a PDF hosted on Shopify, presented as a download. This indicates a social engineering lure to trick users into clicking the malicious link, likely leading to malware download or a phishing page.

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=android+reboot+again+and+again
    • http://files.thestampprofessor.com/uploads/1/3/2/3/132303410/1916416.pdf
    • http://files.elliebeanphotography.com/uploads/1/3/1/6/131606411/4827412.pdf
    • https://cdn.shopify.com/s/files/1/0429/3220/7782/files/download_idodo_umeh_college_biology_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/xabulozovesuwadesarid.pdf
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/23759983728.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/blurred_background_camera_app_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/3823/5031/files/newuvofewameretozagonobid.pdf
    • https://cdn.shopify.com/s/files/1/0440/4353/4486/files/67638855589.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/bofisiw.pdf
    • https://cdn.shopify.com/s/files/1/0440/3478/5430/files/47614820862.pdf
    • https://cdn.shopify.com/s/files/1/0440/9730/6776/files/zatubuwarorixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0623/8613/files/dinidezudufojikaxakefaxe.pdf
    • https://cdn.shopify.com/s/files/1/0434/8801/8598/files/hmrc_penalty_appeal_letter_template.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_off00005d5b.bin
ddf98dbca7a55e5ce4798d8c14e124291913d37528caee7d0ef9dec06a935382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5B 4912 bytes
font_01_sfnt_off00006e17.bin
e9b7398e1789ac9d3393486a0ae9613108511e493d4ac327448e051b23d50146		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E17 10012 bytes

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