Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cc8080ecd6f5043…

MALICIOUS

PDF

83.3 KB Created: 2020-12-29 14:03:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e376194940204061c71aa912c542768f SHA-1: 1c9c8e52d3651c6bf4a1620953ebb2e864683acb SHA-256: 8cc8080ecd6f5043179e35720a52e290ef102ec4b7ac76d38531081453f2e472
244 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to disposable hosting or known redirectors, indicating a link farm designed to lead users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via these links. No scripts were extracted, but the PDF structure itself is used to host the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffine.ru/123?utm_term=densidad+del+agua+en+g%252Fcm3 In PDF document text
    • https://tenuzovew.weebly.com/uploads/1/3/0/7/130740022/judawokiwu-sozunadak-malutugadab.pdfIn PDF document text
    • https://poraduke.weebly.com/uploads/1/3/4/3/134385775/tijivirave.pdfIn PDF document text
    • https://debuvubuni.weebly.com/uploads/1/3/4/8/134846467/3b2a7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408460/normal_5fb54fede66f1.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/functional_power_training.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/1e096e798f7.pdfIn PDF document text
    • https://sujajikozodes.weebly.com/uploads/1/3/1/3/131384638/34149.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/zirigido.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/filemaker_pro_book_library_template.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/fazejif.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1a340ab-78f4-461c-956d-7296962d795a/81215028625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42850205-ae93-44ad-8d05-12581f8d240e/68090201325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3a0a33a-5fe2-4b6b-baea-5e62e06df682/wagewu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8633031e-69f8-4698-9ab9-f115d1f42ac3/ap_seminar_iwa_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e28c3371-5feb-4cd7-862f-af89a1409401/microblading_eyebrows_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/720aa501-dbe4-4076-bf41-6838b0d57987/7293254338.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0D 5360 bytes
SHA-256: 92ccd95eeddb1ea8207000f0e0317d136a17da5ff6860058adef9adbdd394a86
font_01_sfnt_off00010047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10047 12844 bytes
SHA-256: f593fa5b8bf1d8b02953c72c47d57475df0f09ed926238d32844b5ebe2ac1b4e
font_02_sfnt_off000129dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129DD 16060 bytes
SHA-256: 2d958bd008b8db5b33092f112e99c856adbcc0a100e950d14ff814b784be6357