Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e64c60b17e37ae…

MALICIOUS

PDF

42.0 KB Created: 2020-08-09 23:46:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4ec80c15d1d940fa9ceb45151fc0353 SHA-1: 3ce52f3cf76e69816e8d4af8fe2d2a2884789cff SHA-256: 18e64c60b17e37aeaf97bb1d5fa80aad0b617ca1b617eac6663c3519af04a975
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to mimic legitimate documents, such as a 'partnership deed pakistan pdf'. This suggests a phishing or malware distribution attempt using a lure document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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=partnership+deed+pakistan+pdf In PDF document text
    • http://files.unityofheartfalmouth.com/uploads/1/3/0/7/130738719/varuvinetuzawonajuge.pdfIn PDF document text
    • http://files.jaspercountytiochcommunityassociation.com/uploads/1/3/2/3/132303041/rekefunafovamaxise.pdfIn PDF document text
    • http://nuwoluz.stresscafe.com.au/uploads/1/3/0/8/130873995/zagidag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/ct_drivers_license_check.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lewajoranuputefikilos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/skf_cylindrical_roller_bearing_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6807/0815/files/fire_risk_assessment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/25408810446.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/21894638281.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4736/1439/files/love_marriage_vs_arranged_marriage_essay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6288/6551/files/mizudan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/zerul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9860/9566/files/digij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/campbell_biology_12th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6127/8885/files/muvadoji.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6823 5164 bytes
SHA-256: d85e4edc9e0033877e2666567a77f6bdd4977ec8f7f0f969cd5e58d3dc1dae1e
font_01_sfnt_off000079ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79AD 9776 bytes
SHA-256: 16b424695c1296440a65411c6266cfc43a2520f695dd726740e04ee4706926e7

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