Malicious PDF — malware analysis report

Static analysis result for SHA-256 14573e768e0f3dc1…

MALICIOUS

PDF

384.9 KB Created: 2020-08-24 18:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b88da560874111a4263d21661099cb9 SHA-1: dd8a0fede3adfa779bad2eca77c1333e268b5d10 SHA-256: 14573e768e0f3dc19ab74149a416d06dfabd97f1dbd0680400c46af195a75b43
134 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a heuristic firing for a clipboard command execution lure, indicating it instructs the user to copy and paste content into a shell. It also links to a known malicious redirector, ttraff.cc, which likely serves as a distribution point for further malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/pify?keyword=moose+jaw+recreation+guide+2017
    • http://files.kevinbirdteachingportfolio.com/uploads/1/3/0/8/130874451/wilodakigo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/jokubuvamilet.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/define_social_sciences.pdf
    • https://cdn.shopify.com/s/files/1/0434/5344/8358/files/kejelelu.pdf
    • https://cdn.shopify.com/s/files/1/0464/7914/7176/files/axis_direct_demo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/pibogenebenegus.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/70179810818.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/bank_po_syllabus_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/4318/2999/files/web_development_in_php_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/87408865882.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b323.bin
957db0c7e82085aa27aab0e7706a55dc5ff7db8633acea79ef12a9143bfb0007		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B323 5656 bytes
font_01_sfnt_off0005c6a2.bin
90cc542b694f8a8293dbde1e7ac33e4734bf0f1d1f7c877a94edc4e43016cb7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6A2 14672 bytes

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