Malicious PDF — malware analysis report

Static analysis result for SHA-256 c653f2816f3686f6…

MALICIOUS

PDF

75.5 KB Created: 2021-02-28 23:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e9d3b071885ac301f5ddbbcb9e2af021 SHA-1: 6f7ce5044584ec75c949996c425c6f3dc433de95 SHA-256: c653f2816f3686f6162c0ea3e1f2665434b5f965c05e96ec0faa4764b2f5dde3
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The primary URL, 'https://jacksth.ru/strik?utm_term=harry+potter+and+the+philosopher%2527s+stone+book+price+in+pakistan', appears to be a lure to disguise the malicious nature of the document.

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
  • 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://jacksth.ru/strik?utm_term=harry+potter+and+the+philosopher%2527s+stone+book+price+in+pakistan PDF link annotation
    • https://furogareb.weebly.com/uploads/1/3/1/3/131397930/0b0fda33ce0b.pdfIn PDF document text
    • https://vadutebo.weebly.com/uploads/1/3/4/8/134889136/d3c63.pdfIn PDF document text
    • https://pekatube.weebly.com/uploads/1/3/5/3/135393066/wonegiruz-regopamot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391331/normal_601705adeb2c9.pdfIn PDF document text
    • https://pozusope.weebly.com/uploads/1/3/1/4/131453674/mixapurub.pdfIn PDF document text
    • https://devudupaf.weebly.com/uploads/1/3/4/8/134880603/vedulavivi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365570/normal_5ff88170f2c99.pdfIn PDF document text
    • https://jitojadafolad.weebly.com/uploads/1/3/4/4/134404030/xavagol.pdfIn PDF document text
    • https://nugukijozagesek.weebly.com/uploads/1/3/0/7/130739433/2364936.pdfIn PDF document text
    • https://gunajotigur.weebly.com/uploads/1/3/4/7/134738866/8070873.pdfIn PDF document text
    • https://zabugejagovim.weebly.com/uploads/1/3/1/6/131637755/bajuxizugumiramajaj.pdfIn PDF document text
    • https://jumolixebeze.weebly.com/uploads/1/3/4/3/134352805/demav-muvageridu.pdfIn PDF document text
    • https://ponatuxo.weebly.com/uploads/1/3/4/5/134596183/3423641.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393785/normal_60291f82350dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://geforagegi.atwebpages.com/how_do_i_add_a_video_to_my_wix_website.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/35326066399.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_off0000e938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE938 5464 bytes
SHA-256: 14de82ef926409806ed6cde10da8d7d235fd537c23bfdbb825f5edce9ca115a9
font_01_sfnt_off0000fbcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBCB 10624 bytes
SHA-256: b4d38493ad4297821687db29e294a84f91a33683e73732e9647cd4b2ea32b1ea

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