Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1deda0adbeeba9…

MALICIOUS

PDF

148.6 KB Created: 2020-08-18 19:22:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec364b2658dc9cd6e7ee8fdab5d7d0d6 SHA-1: d7f84070fd5a49c5fbc2035362fa292ad02b4f2b SHA-256: 9f1deda0adbeeba9ba3bf46ea7f2293371f0080ad98d9c3ccfec4c3cb2afdc31
94 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=milestone+chart+visio+template'. This URL is embedded within the document body, suggesting a social engineering lure to trick the user into clicking it. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

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.
  • 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=milestone+chart+visio+template
    • http://files.maddybradleycollection.com/uploads/1/3/1/6/131636781/bixozipara.pdf
    • http://meripebi.missgreenbayarea.com/uploads/1/3/2/8/132815296/6439283.pdf
    • https://cdn.shopify.com/s/files/1/0441/2784/6552/files/administrator_s_deed_form_illinois.pdf
    • https://cdn.shopify.com/s/files/1/0432/8292/3676/files/kowumibafevaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/malopixikixikekewufovafon.pdf
    • https://cdn.shopify.com/s/files/1/0435/5840/4245/files/vesenusizadiserewimosuzod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gejazopemovaro.pdf
    • https://cdn.shopify.com/s/files/1/0429/1523/3959/files/the_last_of_us_guitar_tab.pdf
    • https://cdn.shopify.com/s/files/1/0432/7745/1428/files/givimejesolabitaduzokowi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0865/4492/files/construct_a_cladogram_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/1320/9246/files/4282469324.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/zener_avalanche_breakdown_mechanism.pdf
    • https://cdn.shopify.com/s/files/1/0431/3468/1250/files/how_to_become_more_intelligent.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_off00020346.bin
75d63a1268673c33ed1c94e16a1fdd4ff390ad60472959d1c4e943e5b8a52833		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20346 5236 bytes
font_01_sfnt_off000214f7.bin
c8623d4273de7f47a7823cf28913ec89ecd54cb0613c831d0894402ada35a6b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x214F7 15272 bytes

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