Malicious PDF — malware analysis report

Static analysis result for SHA-256 02cf47f450ebd63a…

MALICIOUS

PDF

71.8 KB Created: 2020-11-17 03:17:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1bc5c2fc2a8d4831f0813268aada6967 SHA-1: 26354645d47136272788f8c37b8ead760542c24d SHA-256: 02cf47f450ebd63aa397384e6912de19cb17f5d3aae88c2699435094ddfdeea0
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external websites, indicating a link farm or phishing attempt. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be related to weight loss product reviews, likely serving as a lure. No scripts were extracted, but the presence of numerous malicious links suggests an attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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/123?utm_term=irwin+green+tea+fat+burner+reviews In PDF document text
    • https://muzokive.weebly.com/uploads/1/3/4/4/134498707/sidaxixi_popaten_ladijajuvop.pdfIn PDF document text
    • https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/5814631.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/99fd2c04-8e22-4277-a773-3bfd85bd6519/52118016383.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/kixekesejef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdeb5f9a-ecfc-4dae-9af5-755ed6b27236/ganulemipexitutuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5568cec-73ac-4f98-a001-5c10605172ce/25973773887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1bd0ce5-a876-4b1e-a46c-dd8d85b8c306/zasewibozolof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7c5ecd1-b553-4c3f-b90b-170ee58449fa/lujok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef5b1c3f-250b-49a8-a2bc-3ce37e2cc737/budelagewalugipozivezo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b31453f-914a-4af6-a489-227e1efa672e/i_am_weasel_dvd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5c74bb1-6376-4cba-af58-b4237f97aa33/magisterium_la_torre_dorada_espa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8067a794-1e01-46d2-b003-f32566771aa7/bobowabebupijumakakaxov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1366ba71-8e7c-48e5-920f-28e07e0a54ab/multiplying_and_dividing_fractions_worksheets_for_7th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/10145404712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e42adea-f63c-4a0b-83df-4cca02bdb7be/526395126.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD137 2900 bytes
SHA-256: b3dfb2f2c41da7350fc3755141d2fd0ea5796bb125df25fec831093623ff73df
font_01_sfnt_off0000db7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7A 5132 bytes
SHA-256: f1b70c1d2b383b537ec1a5c399670348db81af036f48c6717998a6cb96ccd5af
font_02_sfnt_off0000ed24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED24 10732 bytes
SHA-256: ccec77dda675847b74141fd4eb22b8579a5fe3fb509b7710b907c18d07ec13c8

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