Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7fcc893f4e0acdc…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 01:13:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b08bea1573e564072bbf837cacc81cdd SHA-1: 6f47df52a217c2b62be75f5e9f6b2f100a890cbf SHA-256: d7fcc893f4e0acdcc2975bf1f441b3565182b047c21de290bad32e345115fa46
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known for malicious activity. The primary malicious link identified is https://ttraff.ru/pify?keyword=capnography+waveform+interpretation+pdf, which is designed to lure users into clicking. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the PDF structure itself is indicative of a link farm used for redirection to malicious sites.

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.ru/pify?keyword=capnography+waveform+interpretation+pdf In PDF document text
    • http://files.marketplaceonmill.com/uploads/1/3/1/4/131437246/tesemel_radutexe.pdfIn PDF document text
    • http://files.sweetnlowdachshund.com/uploads/1/3/1/4/131437444/5c4356755f0a.pdfIn PDF document text
    • http://files.vacworld.net/uploads/1/3/0/7/130740458/luralebiwum.pdfIn PDF document text
    • http://wutojoj.misssantafe.org/uploads/1/3/0/8/130814328/26d67d.pdfIn PDF document text
    • http://files.wales-on-wheels.com/uploads/1/3/0/7/130774972/eba9c6c7.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/1/0433/6310/6968/files/beautiful_in_white_piano_and_violin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4277/3914/files/19577953612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7700/files/nuwejad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8827/1773/files/basic_electrical_engineering_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8385/7053/files/26275317763.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7337/9230/files/97108305037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4624/files/zurafufubaxotedazewidewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0357/4432/files/longman_dictionary_of_english_collocations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1007/1460/files/14748512725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3290/2806/files/44438280107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/femixaziwatavomiruluwewop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1641/files/fedimorirok.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_off000065dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DD 5404 bytes
SHA-256: 49effc80bc242b9726c3d5ef484e99d065e9cb45970156bb83807098ba7d65ac
font_01_sfnt_off00007834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7834 10696 bytes
SHA-256: 8fc58d1ab41daa5523708cba35b089974e5c03e252e0d7db3560d743fa241408

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