Malicious PDF — malware analysis report

Static analysis result for SHA-256 569133cc4bfd7d9f…

MALICIOUS

PDF

50.1 KB Created: 2020-09-04 13:13:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd33d12e104f550482614aede35d8eb6 SHA-1: f6695296d90c45698a7d15e90aec258ef7beb8f0 SHA-256: 569133cc4bfd7d9ffd10a7067aa15a030b11406d55e12a6a3a3a14748ed9a028
68 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains embedded URLs, one of which, 'https://ttraff.club/wix?keyword=curriculum+vitae+letter+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'curriculum vitae letter pdf'. This suggests a social engineering attack where the user is prompted to click the malicious link, likely to download a payload.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=curriculum+vitae+letter+pdf
    • https://cdn.shopify.com/s/files/1/0437/0120/7193/files/diviser_en_plusieurs_pages.pdf
    • https://cdn.shopify.com/s/files/1/0431/8589/7627/files/august_2018_calendar_word_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/8899/2674/files/catalogue_panasonic.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_b747d99217054b15b57af1b4acffa740.pdf
    • https://static.usrfiles.com/ugd/8acad3_0ec75c05aa9f40768acc6ff02a39c2de.pdf
    • https://static.usrfiles.com/ugd/50de67_a194167833b04c40923f9c5b0ac77f8c.pdf
    • https://cdn.shopify.com/s/files/1/0432/9439/2485/files/66988898950.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/wolekut.pdf
    • https://cdn.shopify.com/s/files/1/0430/3880/2073/files/pikuz.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_off000088b2.bin
9330e10f01a7258537b2cf198645b475ed8102eb434bedad2a11a06a1b3baf44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B2 5088 bytes
font_01_sfnt_off000099eb.bin
2a4673a187fd10e89be7046173a0e1be36f41e88a1b9e7de2f0cde3665a6520f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99EB 10052 bytes

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