Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfc2e29dcb93db8f…

MALICIOUS

PDF

80.8 KB Created: 2021-06-11 17:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6dd5f6a2acda93263ff512fba7003f5f SHA-1: 7228844b1bfa95cca597605c49980145cdf1cdfd SHA-256: cfc2e29dcb93db8fddfaec4157ee02a111c3fffb65e0b8e3e7d9a8fa087870bc
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, indicating a phishing or malware distribution attempt. It functions as a link farm, directing users to numerous external PDF files hosted on various domains, some of which are disposable. The presence of a download button lure further supports the malicious intent. While no scripts were explicitly extracted, the PDF structure and external links suggest it is designed to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pistant.ru/pbw?utm_term=neet+most+wanted+biology+book+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4423757/normal_604ad5d97803c.pdfIn PDF document text
    • https://rujivedudupuvi.weebly.com/uploads/1/3/6/0/136051492/tifemazovop.pdfIn PDF document text
    • https://wovigapugup.weebly.com/uploads/1/3/2/7/132710676/4199159.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409396/normal_602507238520f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449411/normal_5febbe2e737f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495043/normal_6028bfec694ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_603779ec76619.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://uploads.strikinglycdn.com/files/62bc37f6-03a4-469f-9c17-f89b8eeb4511/ejercicios_para_sexto_de_primaria_matematicas.pdfIn PDF document text
    • http://nalujoxerisi.pbworks.com/w/file/fetch/144662457/stoichiometry_worksheet_1_answers_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34e2e3ea-f599-474e-b447-436cf6a4cbb4/mubotagiwuwegutipo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b535c6bc-233e-4a24-b66e-ff855385a2b1/47118729396.pdfIn PDF document text
    • http://pusavivo.pbworks.com/f/valuwuboju.pdfIn PDF document text
    • http://serizedez.pbworks.com/w/file/fetch/144599034/bopunitibanisidetu.pdfIn PDF document text
    • http://vazesuna.pbworks.com/w/file/fetch/144506289/96824147205.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09c97397-324b-4d50-982a-8383c88b86ec/a_grammar_of_motives.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7f0ec32-c27b-404a-bac8-5bd0144c6ecc/mantoux_test_result_duration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecdc7011-dbe5-4a2d-a32e-34e17ac64e17/92115613916.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c53dfc0-0e84-46dc-b0b9-356686ac1c22/2120937840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae033662-26dc-473d-8df5-5d1e6f79a030/what_is_stress_in_steel.pdfIn PDF document text
    • http://zepadatoju.pbworks.com/f/62045824816.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF01 5416 bytes
SHA-256: f351551e75d7a348f403f3c0640b66ba7c9765f6da32432c0140ef92f41e6057
font_01_sfnt_off0000f16f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF16F 4508 bytes
SHA-256: d72a8b6f9c8a66bce16b9ad0dec2346ba625f0c56ca18f891894f9d5dbb6a5ff
font_02_sfnt_off00010259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10259 2884 bytes
SHA-256: b17c878e4389bc37131d23314004e051637468a2b9b6171fd873bbdc24766b0c
font_03_sfnt_off00010e63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E63 11420 bytes
SHA-256: b8556a34d430b02fec1d1d6680896265f2aa99f045f27c6fbbce3c82898276af

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