Malicious PDF — malware analysis report

Static analysis result for SHA-256 69517e0054bde839…

MALICIOUS

PDF

66.5 KB Created: 2021-03-01 10:43:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: dd307ab2b5ff9c4b937a371e0c7ebcf9 SHA-1: a8150b8a55abf0366b74e815667c847dee1dfb30 SHA-256: 69517e0054bde839fabdf9a33c0deb3a3abe6808a51cde24db5f10ed306fc8a2
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, which is characteristic of SEO link farms used to manipulate search engine rankings or redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or scamming operations. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://crophysi.ru/123?utm_term=samsung+front+load+washer+will+not+drain PDF link annotation
    • https://basuxujazako.weebly.com/uploads/1/3/4/4/134467371/runavukikafodape.pdfIn PDF document text
    • https://fegejakir.weebly.com/uploads/1/3/5/2/135299458/b2548cc6.pdfIn PDF document text
    • https://gixakipero.weebly.com/uploads/1/3/1/4/131412713/fb9a7.pdfIn PDF document text
    • https://dasasaperot.weebly.com/uploads/1/3/4/6/134665710/5488178.pdfIn PDF document text
    • http://vamoktin.ru/free_video_calling_dating_sites3ap7c.pdfIn PDF document text
    • https://vusexojepaxeva.weebly.com/uploads/1/3/4/0/134096357/e719f82a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492294/normal_602c4b2aa8119.pdfIn PDF document text
    • https://resagivet.weebly.com/uploads/1/3/1/3/131383325/verapokifakamedoxuse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402712/normal_600e92ac7425c.pdfIn PDF document text
    • http://reweder.site/daradezuxizunifamuvaxabel7w1lr.pdfIn PDF document text
    • http://ulekschool.online/49684914733gamvv.pdfIn PDF document text
    • https://pumutetigowon.weebly.com/uploads/1/3/4/6/134699291/gisemefevo_daxirakejudel_zelisafiwajetug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gavojomizam.epizy.com/gokig.pdfIn PDF document text
    • http://wumoxafu.epizy.com/megazis.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_off0000c93d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93D 5516 bytes
SHA-256: f265532b5c35c45643bae22945df2c902096329a8fda4c4a3a1398e218cd10d0
font_01_sfnt_off0000dbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDD 9696 bytes
SHA-256: 3a81ca90abe062dda3786e5efeec59534235e87d1793f0267ca5d86cebf20a21

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