Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aeaae6ab4cd1453…

MALICIOUS

PDF

98.2 KB Created: 2021-02-13 21:59:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 519eea80680845627e009901440faaa5 SHA-1: 9ed399dd5671e27e4f8b26ae7b4df629611b4a28 SHA-256: 8aeaae6ab4cd145355c9abaa813769332c096d6cd1c5ef7531030aa163e42508
194 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malicious content delivery attempt. It contains a large number of external links, many hosted on disposable domains or services like Weebly, suggesting a link farm or SEO spam operation. The embedded content, though heavily obfuscated, likely serves to redirect users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://bologen.ru/wix?keyword=kidde+kn-copp-b-lpm+manual PDF link annotation
    • https://fanazogi.weebly.com/uploads/1/3/0/9/130969494/fazitonujov-xumota.pdfIn PDF document text
    • https://dowebirajosem.weebly.com/uploads/1/3/6/0/136010559/9564549.pdfIn PDF document text
    • https://senamevab.weebly.com/uploads/1/3/4/6/134689233/kugero-bebirefoverarij-volelize-depena.pdfIn PDF document text
    • http://pemutoguxo.66ghz.com/56182381010.pdfIn PDF document text
    • https://nuguzawopaji.weebly.com/uploads/1/3/4/0/134040365/04ed1b24f432.pdfIn PDF document text
    • https://tunizobun.weebly.com/uploads/1/3/1/0/131069832/nugajoge.pdfIn PDF document text
    • https://wakukaxowemaba.weebly.com/uploads/1/3/5/3/135303752/xisozetavok.pdfIn PDF document text
    • https://murafasonuralab.weebly.com/uploads/1/3/5/3/135398902/kevefabili-senikagiku-mesixezinuf-mebupabixonetu.pdfIn PDF document text
    • https://vizegibog.weebly.com/uploads/1/3/4/4/134458583/figasuke.pdfIn PDF document text
    • https://duxegolukazokun.weebly.com/uploads/1/3/1/3/131398215/kopaxolesaxasexase.pdfIn PDF document text
    • https://ganegekisawaji.weebly.com/uploads/1/3/1/4/131406809/loweto.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gefuxexo.epizy.com/sizejegamowejawojeme.pdfIn PDF document text
    • http://fovabikomap.epizy.com/arbor_networks_ddos_datasheet.pdfIn PDF document text
    • http://petetilazuji.epizy.com/87130517114.pdfIn PDF document text
    • http://parolodase.epizy.com/92579634843.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_off0001464c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1464C 5148 bytes
SHA-256: 758585c64e134f4136c6c218a932c7262ef7ae061ee9ee6031fadc81ec4d3da3
font_01_sfnt_off000157c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157C1 10484 bytes
SHA-256: 8b50ec2ea029a55aec0c4da69ac79ec31729cc8020285bb2fdd67e4f3a54ae14

Open this report in the interactive analyzer, or submit your own file for analysis.