Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a78c514751fd68…

MALICIOUS

PDF

114.6 KB Created: 2021-03-15 00:14:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07c52162347f383d26289885649cf930 SHA-1: 683fc9977573bbfb7c24bd5bad24fc7b8ac01da6 SHA-256: 82a78c514751fd682ed1005d80a2ade26ea669bbb2bb8d2f7dc3edddff7f0370
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links pointing to potentially malicious or disposable domains, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. The ML classifier and ClamAV detection further support its malicious nature. The presence of embedded URLs suggests an attempt to redirect the user to harmful content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8768

Heuristics 5

  • 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 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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://dafemum.ru/award?keyword=biopsychosocial+spiritual+assessment+pdf In PDF document text
    • http://virona.org/macbeth_act_2_scene_4_analysisyiezc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382617/normal_60170ca5a4aa2.pdfIn PDF document text
    • http://copyrightnotice-ig.com/bojupibcnem.pdfIn PDF document text
    • http://gunofixe.medianewsonline.com/78294097893.pdfIn PDF document text
    • http://netzamka.ru/vituwa7wjdh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477400/normal_601914b8af916.pdfIn PDF document text
    • http://gaydating.world/32023481283aytuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416928/normal_601d59f0f01aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500189/normal_6008d6bcd6686.pdfIn PDF document text
    • http://boketizabujig.scienceontheweb.net/lubatofasogozasinofi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498994/normal_5fcbcfa7bb51a.pdfIn PDF document text
    • http://whysmall.space/88333195308cqi68.pdfIn PDF document text
    • http://liwexun.mywebcommunity.org/chemistry_organic_compounds_list.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418000/normal_5ffcaa3b2f54c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414360/normal_601e26710f6fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475397/normal_5fe4e0a100c77.pdfIn PDF document text
    • http://puzofogerexiwi.22web.org/tamilrockers_abcd_movie.pdfIn PDF document text
    • http://sowipilarow.mygamesonline.org/kazuvafokaminat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ligekasuxube.onlinewebshop.net/bulleh_shah_biography.pdfIn PDF document text
    • http://dakokaxawizepu.epizy.com/vevupenekofunem.pdfIn PDF document text
    • http://kufekisawisewo.onlinewebshop.net/jumefuxukavinafaf.pdfIn PDF document text
    • http://jumepenitujox.atwebpages.com/diy_kitchen_nook_ideas.pdfIn PDF document text
    • http://wabinugo.epizy.com/zawiriw.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

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_off00019308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19308 5544 bytes
SHA-256: e50207ac155edb75672d8fe02a480cd5605594ea7d74f9137838cf13e3803519
font_01_sfnt_off0001a5c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A5C3 10928 bytes
SHA-256: da22b011a97dbfee5b75ef058766d978ed980b6e95956b6c03300bcc2299ffcb

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