Malicious PDF — malware analysis report

Static analysis result for SHA-256 51d8079914394101…

MALICIOUS

PDF

87.6 KB Created: 2020-08-01 00:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62761d768b1148dc88b146b17228be0a SHA-1: 81d39c8afc367c4fd02b62d89d4bd34c45480b6e SHA-256: 51d807991439410126e7d7c04bc16b8f5f48919ba892e7c376ed1bf197c35d41
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript and multiple external links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The primary malicious URL is https://ttraff.com/pify?keyword=cookie+clicker+inspect+element. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the intended destination for user interaction. The presence of numerous links, many hosted on cdn.shopify.com, indicates a link farm or SEO poisoning attempt to distribute the malicious redirector.

Heuristics 4

  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=cookie+clicker+inspect+element
    • http://files.kellyindustrial.com/uploads/1/3/1/3/131384604/d08da88.pdf
    • http://files.covenantsuccession.com/uploads/1/3/1/4/131438604/3356358.pdf
    • http://files.americanuktaxsolutions.com/uploads/1/3/2/7/132741241/kukub.pdf
    • http://files.lacuencadelriopiedras.com/uploads/1/3/2/8/132814949/kofabupuga_vujexegepe_viguvepebewikez.pdf
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/in_memoriam_example.pdf
    • https://cdn.shopify.com/s/files/1/0434/7346/9597/files/5309887560.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/60868006088.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zipepatijexozuzazes.pdf
    • https://cdn.shopify.com/s/files/1/0435/8183/3379/files/tesotinafano.pdf
    • https://cdn.shopify.com/s/files/1/0439/1917/9931/files/rirakoti.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/11765032560.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/binexezumevorez.pdf
    • https://cdn.shopify.com/s/files/1/0428/5333/5207/files/1873783818.pdf
    • https://cdn.shopify.com/s/files/1/0437/3938/1912/files/wetixadozifakesakogej.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/povipelurubeve.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8bc.bin
b6d3836577c4771ee388ce1efda696747226f23bfd5d0a678480dafdafec1bfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BC 4744 bytes
font_01_sfnt_off0000f8bc.bin
415f60ef7d02bd767df6f23b675311f35e4033d799016145a44c8e4c877b4926		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BC 16944 bytes
font_02_sfnt_off00012d3b.bin
a4f616c8ed03231f927c8f6725ddfb6aed79ba1e9c0c9257d690ec40f184d4cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D3B 16388 bytes
font_03_sfnt_off000142ca.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x142CA 4324 bytes

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