Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed20cfea5b3c2de9…

MALICIOUS

PDF

61.0 KB Created: 2020-08-01 10:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91b73f14b9fce211d7f7cbbcd96ced44 SHA-1: a62f70055e81eb5b1ea8dd1f1f078c22023bcd4f SHA-256: ed20cfea5b3c2de9de62161edabd0c710b5e3c1f78495937fd51e3a3ecec872e
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to URLs that are likely part of a link farm or redirection scheme. The primary malicious link identified is https://ttraff.cc/pify?keyword=python+string+split, which is a known redirector.

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.cc/pify?keyword=python+string+split In PDF document text
    • http://files.phoneangelrepair.com/uploads/1/3/0/7/130775856/tosalajanag-vijiwobuto.pdfIn PDF document text
    • http://files.danielmarkbutler.com/uploads/1/3/2/3/132303317/75a82db43a1.pdfIn PDF document text
    • http://files.idealhome.services/uploads/1/3/1/4/131454012/5948916.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/1/0428/9835/8432/files/37872338034.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2561/2450/files/21052372035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4586/2041/files/41542563351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/tigarivilelodutiliwiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5780/6503/files/94399250471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2878/1988/files/sonigigeponikedomejemajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/befuxaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5548/9948/files/22226392610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20659662050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/antimicrobial_agents.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 2

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_off0000a4e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4E5 4972 bytes
SHA-256: 5d332498d070b7e5b58c7f513b4859e701e3aac4b492abc0f5c4e919a9b214bf
font_01_sfnt_off0000b5d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5D7 15984 bytes
SHA-256: c82ca615961efb0adb02819a1bfa1bd1cab19f948bfae526ab7460bf52413fb6

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