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) First seen: 2026-05-08
MD5: 62761d768b1148dc88b146b17228be0a SHA-1: 81d39c8afc367c4fd02b62d89d4bd34c45480b6e SHA-256: 51d807991439410126e7d7c04bc16b8f5f48919ba892e7c376ed1bf197c35d41
214 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.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 In PDF document text
    • http://files.kellyindustrial.com/uploads/1/3/1/3/131384604/d08da88.pdfIn PDF document text
    • http://files.covenantsuccession.com/uploads/1/3/1/4/131438604/3356358.pdfIn PDF document text
    • http://files.americanuktaxsolutions.com/uploads/1/3/2/7/132741241/kukub.pdfIn PDF document text
    • http://files.lacuencadelriopiedras.com/uploads/1/3/2/8/132814949/kofabupuga_vujexegepe_viguvepebewikez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/in_memoriam_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7346/9597/files/5309887560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/60868006088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zipepatijexozuzazes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8183/3379/files/tesotinafano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1917/9931/files/rirakoti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/11765032560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/binexezumevorez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5333/5207/files/1873783818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3938/1912/files/wetixadozifakesakogej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/povipelurubeve.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BC 4744 bytes
SHA-256: b6d3836577c4771ee388ce1efda696747226f23bfd5d0a678480dafdafec1bfa
font_01_sfnt_off0000f8bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BC 16944 bytes
SHA-256: 415f60ef7d02bd767df6f23b675311f35e4033d799016145a44c8e4c877b4926
font_02_sfnt_off00012d3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D3B 16388 bytes
SHA-256: a4f616c8ed03231f927c8f6725ddfb6aed79ba1e9c0c9257d690ec40f184d4cc
font_03_sfnt_off000142ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142CA 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333