Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1a4919d72d429e7…

MALICIOUS

PDF

41.7 KB Created: 2020-08-15 04:07:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5be863da0bd56049f70e8a8333e0db79 SHA-1: 5aae29e06056f792f21ca0d8623c5e495832e0ec SHA-256: e1a4919d72d429e7d4570984043257b3316b298f46b4db7f68f3af1b9a46b88a
194 Risk Score

Malware Insights

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

The PDF file contains numerous links, a significant portion of which point to a link farm hosted on Shopify. One of these links, disguised as a textbook resource, redirects to a malicious URL. This suggests a social engineering attack aimed at directing users to potentially harmful content. No scripts were extracted, limiting the analysis of further malicious behavior.

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=top+sites+to++textbooks In PDF document text
    • http://files.marina-wrestling.com/uploads/1/3/0/8/130814078/nunuwobelidowu-zezov-lemefofosijuk-rejajowodiw.pdfIn PDF document text
    • http://pawuma.bbeautyco.com/uploads/1/3/0/7/130776167/piradiwezusiw.pdfIn PDF document text
    • http://files.ecosphererestorationinstitute.org/uploads/1/3/0/8/130814439/dujadoravasu_gijuwasef_zarab_girikopuvotule.pdfIn PDF document text
    • http://wimuxufuk.ambercove27waterfalls.com/uploads/1/3/1/1/131164250/7086188.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/1/0431/7813/1611/files/tapop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6445/4294/files/catalogo_de_cedulas_brasileiras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/97266644372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2094/9403/files/10312224369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/regional_manager_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/15503747574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0426/3585/files/mutudikasuzilaxenitarewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9616/0921/files/bugofixasafomezepob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/libro_epidemiologia_basica_bonita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/personal_pronouns_worksheet_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/54627664815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9376/9894/files/59739403542.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 6

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_off00006605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6605 4696 bytes
SHA-256: 79e16c5aa592f84c6d9097eda8c30f983a670f975304ce69161c5e3b82e7bbb3
font_01_sfnt_off00007616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7616 10624 bytes
SHA-256: 04715a6e669180ec5229167400eea410c922e8a62de33d5115c0f34985bef25d

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