Malicious PDF — malware analysis report

Static analysis result for SHA-256 01da036fb4c745b0…

MALICIOUS

PDF

40.4 KB Created: 2020-08-14 21:15:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4861d67f52c46e842fc20e674a0c482e SHA-1: 658730abd998b254acbca5f67c0504aa7bccb0cb SHA-256: 01da036fb4c745b00b1b8fe433c9fd0b2eb1287b11ee21ee503d582b091bb418
194 Risk Score

Malware Insights

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

This PDF file contains multiple embedded URLs, including one pointing to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains text that appears to be a lure related to "Shakespeare sonnet 116 pdf" and references the wkhtmltopdf tool, suggesting it was generated programmatically. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm strategy, likely to improve search engine ranking for malicious content or to obscure the ultimate destination. The ML classifier also strongly flagged this PDF as malicious.

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=shakespeare+sonnet+116+pdf In PDF document text
    • http://bufopo.goodmourningllc.com/uploads/1/3/0/9/130969060/34d8666e4b92.pdfIn PDF document text
    • http://files.chordof3strands.com/uploads/1/3/1/8/131856352/wixixonupemup.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/1/0427/9074/8316/files/8887851875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/8297694647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8459/2805/files/60867016514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0860/4829/files/kufataxizizavid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7015/3113/files/34429508807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7913/0531/files/66242323787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2838/8772/files/15739391498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1966/4541/files/sowipopabivejukilemep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4529/8080/files/30636608359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0463/9907/files/sesulafokebad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/31728031639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/toyota_avensis_verso_2020_instrukcja_obsugi.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 1

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_off0000602a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602A 5472 bytes
SHA-256: cbcb6676a6a174c33dd5f5daf9c2107792a635c2b93f4412a7d72ec15315e4c0
font_01_sfnt_off000072b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B9 10120 bytes
SHA-256: 2b76a159e15b85325bf0e7c710871a5dd79a735edbf9bc11cbb86bac549f5d42

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