Malicious PDF — malware analysis report

Static analysis result for SHA-256 25cc2ec0585e8716…

MALICIOUS

PDF

51.8 KB Created: 2020-08-11 20:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 691a549dd7b4ef604da66663473c2bfc SHA-1: bd64970cf859800826cdd918f6882bb46a975fc2 SHA-256: 25cc2ec0585e871647a1afd94fb00568506840010caf5648a5a16150d305d044
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=avignon+papacy+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL and several other PDF links, reinforcing the lure to external content. The primary attack pattern is a phishing attempt using a deceptive link within the document.

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=avignon+papacy+pdf
    • http://mexew.merrimacohd.com/uploads/1/3/2/8/132815028/2834c98a970a.pdf
    • http://junala.izakaya-sasaya.com/uploads/1/3/2/3/132303382/3532940.pdf
    • http://files.thedialoguezone.com/uploads/1/3/1/3/131379578/buzib.pdf
    • https://cdn.shopify.com/s/files/1/0429/0114/3715/files/61162828611.pdf
    • https://cdn.shopify.com/s/files/1/0434/3637/6231/files/dijutizavopimesilan.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/graphing_equations_and_inequalities.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/ziziwabi.pdf
    • https://cdn.shopify.com/s/files/1/0445/7637/4948/files/slow_dancing_in_a_burning_room_fingerstyle_tab.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5744/files/masegafivirax.pdf
    • https://cdn.shopify.com/s/files/1/0433/9502/3013/files/northwest_territory_vacation_home_tent_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0440/8141/4296/files/sewutelodapenotepav.pdf
    • https://cdn.shopify.com/s/files/1/0434/6216/4644/files/gibizilikipadafewutub.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.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_off00008f70.bin
4886b6ec13a0052f9b426000a5e926c5257da2ac86bc09e335da91fc3e587860		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F70 5168 bytes
font_01_sfnt_off0000a125.bin
59f6b94e33065c5aad823b87b76ac46805a1258e7f27cddc79ba76321c17e84b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA125 9888 bytes

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