Malicious PDF — malware analysis report

Static analysis result for SHA-256 e66ac333fc42d565…

MALICIOUS

PDF

190.7 KB Created: 2020-08-07 18:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 849c96b772647e26ef3767f6bae96266 SHA-1: c8eac14fe8f9ffd3de918c8d14d04d6ab93fe02e SHA-256: e66ac333fc42d5655f8e0a1609ee4b1a03030ab0095c6722a9eaaae398772c68
134 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to 'ttraff.ru', which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. The primary goal appears to be redirecting the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=stalking+jack+the+ripper+pdf+vk In PDF document text
    • http://files.wycombemcctrials.com/uploads/1/3/1/1/131164236/veliri.pdfIn PDF document text
    • http://files.capcitysports.net/uploads/1/3/2/6/132681836/7fec56.pdfIn PDF document text
    • http://rixufo.sommerflooring.com/uploads/1/3/0/7/130775823/kenovuba_siruxiz_bisenagagarutag_niruleloji.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/1/0429/4439/7468/files/babowig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2296/5160/files/adolescent_problems_in_malayalam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/pifasufitini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7385/8710/files/wave_accounting_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/99824869481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6312/7714/files/angina_de_pecho_electrocardiograma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9401/6157/files/47771965423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7937/7830/files/basic_job_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8930/files/laxijusaxotobawejede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/4058485650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0741/0329/files/keluwifozaluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7574/7484/files/wubusipelibemugem.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 3

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_off0002b5b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5B2 5544 bytes
SHA-256: ed491739d7faccdd1cb685904c1ba07cef67b88d4d23a8629973dbc14dcbb520
font_01_sfnt_off0002c89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C89B 10612 bytes
SHA-256: 7c9e6e61bee09a2e1c05f0f69d16694ed4d7012f8a785cad7245712567b1442b

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