Malicious PDF — malware analysis report

Static analysis result for SHA-256 85563784c0ff94b3…

MALICIOUS

PDF

46.0 KB Created: 2020-07-27 11:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53d4e624c81c35677c9d48fcfdf8b182 SHA-1: 73a432c74a6b05ba2c6623b09c80af71fc4ca6b6 SHA-256: 85563784c0ff94b345cd4627021905315ef372c1e2e8daae93c4bd9bdb2733bb
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with a critical heuristic firing indicating a link farm and another identifying a link to known malicious redirector infrastructure. The primary malicious URL identified is ttraff.com. The document body is heavily obfuscated and does not provide clear textual lures, but the presence of numerous links strongly suggests a malicious intent to redirect the user to external, potentially harmful, sites.

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.com/pify?keyword=basic+laboratory+glassware+and+equipment+pdf
    • http://files.sparkleaycliffe.com/uploads/1/3/0/7/130775220/jemax.pdf
    • http://files.nehoularescue.com/uploads/1/3/1/3/131380870/terobopu-taseliben-mimadumepik-gufefariz.pdf
    • http://files.killingtonwinefestival.com/uploads/1/3/1/6/131636957/duwigineduxiwoneli.pdf
    • http://files.vistapaseohomes.com/uploads/1/3/0/8/130873965/cb1fc9b1c95.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/84052830696.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/belaxanun.pdf
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/84710879144.pdf
    • https://cdn.shopify.com/s/files/1/0435/1043/1896/files/gowukak.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/27812831110.pdf
    • https://cdn.shopify.com/s/files/1/0431/0931/8813/files/terir.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/58118610915.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/sakozukip.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nenixuraxolitater.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/wobenigaz.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_off000074c7.bin
6fcfe101794cd40024dcfd508c32039beab1115922fb7070b3586bc05f1b7859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C7 5864 bytes
font_01_sfnt_off0000889d.bin
a407e18d2ab2db6645dfe4973d7d06980fa34d550dcdc418634e445a9bd17806		 pdf-font-stream PDF embedded font (sfnt) at offset 0x889D 9952 bytes

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