Malicious PDF — malware analysis report

Static analysis result for SHA-256 7efc3510a8f71c5d…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 10:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6561a7265557a5d298bcdaab8c02db34 SHA-1: 69c2ce6aaf4629fda34cd417ce6f7e89ca2fd13c SHA-256: 7efc3510a8f71c5d449298b7ed38c2985218c45abd62ecc827bbb2fde6214ffb
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=petg+thermoform+plastic+sheets, is identified as a malicious redirector, indicating an attempt to lead the user to harmful content. The presence of a link farm suggests a tactic to increase search engine visibility or distribute malicious links.

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.cc/pify?keyword=petg+thermoform+plastic+sheets
    • http://zopakage.mrsjones.us/uploads/1/3/1/4/131453574/tuboni.pdf
    • http://files.openstarmaths.org/uploads/1/3/1/6/131637919/98fc8f5e.pdf
    • http://foruma.obmghk.com/uploads/1/3/1/8/131871991/venegegabukixuz.pdf
    • https://cdn.shopify.com/s/files/1/0451/7996/1495/files/biblia_nuevo_testamento_en_griego.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://cdn.shopify.com/s/files/1/0438/2693/8018/files/brief_answers_to_the_big_questions_drive.pdf
    • https://cdn.shopify.com/s/files/1/0435/6331/9445/files/avancemos_2_practice_workbook_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6354/9847/files/96685339455.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59526866216.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/tarotebafokubap.pdf
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/21965393139.pdf
    • https://cdn.shopify.com/s/files/1/0439/5050/6152/files/65862149879.pdf
    • https://cdn.shopify.com/s/files/1/0428/3318/2886/files/36212068680.pdf
    • https://cdn.shopify.com/s/files/1/0429/4138/2812/files/figeginiwabulifa.pdf
    • https://cdn.shopify.com/s/files/1/0438/0485/2386/files/5867752723.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e5c.bin
dd51ed4cc8d28b9dddff56ddb6314b5e4d7f7db47468dca0460fd21066db163c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E5C 5112 bytes
font_01_sfnt_off00005fbd.bin
461fcce1c62299651f3a5ddc95097ab5b54dd9a29d9827e42edcbe9838b6009a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBD 14848 bytes
font_02_sfnt_off00008dfb.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFB 4324 bytes

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