Malicious PDF — malware analysis report

Static analysis result for SHA-256 484e61fe5b238bf1…

MALICIOUS

PDF

65.0 KB Created: 2020-11-21 12:00:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fb1349c820ec37ae63ab397835f52eaa SHA-1: a60dd82e64d89e05dc59e45355a9109ab26ed375 SHA-256: 484e61fe5b238bf100a4f617770af633f0c4c40cd9dbb437653352e3b98d71f0
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as pointing to malicious redirector infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' strongly indicate a malicious intent to direct users to harmful sites. The ML classifier and ClamAV detection further corroborate the malicious nature of the file, suggesting it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://ggtraff.ru/aws?utm_term=codewords+75+answers In PDF document text
    • https://juguzitusiketi.weebly.com/uploads/1/3/4/3/134372303/249402.pdfIn PDF document text
    • https://donaxitod.weebly.com/uploads/1/3/4/6/134688316/gabusi.pdfIn PDF document text
    • https://xunowarusaki.weebly.com/uploads/1/3/4/3/134371630/numarifitu-xakesujubu-monexufurajeduk-lasakudujeveb.pdfIn PDF document text
    • https://vokudaminovisuz.weebly.com/uploads/1/3/4/4/134495340/lokijotebu_panowulis_litasaroji_fotononetaw.pdfIn PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/1ffbaf9902f.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/2f4f42f1-a8ea-4e2f-9583-3f02233f7b83/72678070157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3b6ce1d-a86f-4587-9a8e-a49f247e32f0/atharva_veda_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85907e10-01a0-4694-9a60-b6d944f023ca/14678964214.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e6b64b0-3b25-49d5-989c-10ce0dcd45a8/kunakigazujomosifel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/110fd33f-4e62-4ff2-98eb-91e78c117fff/54570946893.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de5085e5-f25c-4368-87cd-6bb1971a8612/panorama_elementary_school_panora_iowa.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/numujukipisobu.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/supawuxudujamemajuxoguguj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34530c65-2c13-4614-bfd9-67d1c157d4b1/river_oaks_homeowners_association.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c63b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC63B 4988 bytes
SHA-256: 491baf8f2bd9b16917d06dfcb1475e0c3d519059730f25afdf8ba967b8e1d8d8
font_01_sfnt_off0000d757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD757 9500 bytes
SHA-256: a6d13d04de200a8b8ce271b41b3cec1812f6705b4fe388470ac2d6deb6ce0269

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