Malicious PDF — malware analysis report

Static analysis result for SHA-256 62be868c6f8cdf66…

MALICIOUS

PDF

74.2 KB Created: 2021-02-24 02:40:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 079648b8f2da76242270c8bbc27d2464 SHA-1: de28aa74a80e4bbdcfc4eb8896aeff502f7b786a SHA-256: 62be868c6f8cdf6696a676c17bd0918858a82e85228318b9a2b8553560625ee8
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious redirection or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/strik?utm_term=digital+painting+lessons+for+beginners PDF link annotation
    • https://sifijaxamop.weebly.com/uploads/1/3/4/3/134332722/7cf8c1ba02.pdfIn PDF document text
    • https://riwurarelix.weebly.com/uploads/1/3/4/4/134484082/sisozogezovoviwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475217/normal_5fda43c000d88.pdfIn PDF document text
    • http://grusha.space/32652292232peqbn.pdfIn PDF document text
    • https://vidafaloduwi.weebly.com/uploads/1/3/4/7/134716621/9670288.pdfIn PDF document text
    • http://upgrade4me.com/137209497560cl5l.pdfIn PDF document text
    • http://erogan24.website/sylvia_plath_daddy_imageryaauca.pdfIn PDF document text
    • https://juwibaviwexufeb.weebly.com/uploads/1/3/0/7/130739975/9265270.pdfIn PDF document text
    • https://jurogewogil.weebly.com/uploads/1/3/4/3/134318518/e167b8a9ff31.pdfIn PDF document text
    • https://ludutaxe.weebly.com/uploads/1/3/0/8/130814402/91d31361450f.pdfIn PDF document text
    • http://wonder-ita.fun/69309140124j8wbo.pdfIn PDF document text
    • http://rusherx.studio/nss_eski_srm_indiramb64.pdfIn PDF document text
    • https://gofegupozomo.weebly.com/uploads/1/3/4/4/134479888/fusinobomigo.pdfIn PDF document text
    • http://lasleymarkt.ru/geothermal_power_in_iceland_cae_answerso91nw.pdfIn PDF document text
    • https://wavenugila.weebly.com/uploads/1/3/4/8/134852162/lugexu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384143/normal_5fd78d0986f3b.pdfIn PDF document text
    • http://bitjoms.xyz/arya_2_telugu_movie_songs7qwe.pdfIn PDF document text
    • https://venunuwaxel.weebly.com/uploads/1/3/2/7/132740799/xovawixasoniwuv_bojijigeborojir.pdfIn PDF document text
    • https://zudibuliri.weebly.com/uploads/1/3/5/3/135319562/a103d9604.pdfIn PDF document text
    • http://verification-help.business/nelusamowowkc0ma.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e5dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DC 5208 bytes
SHA-256: 4b4d8c0c02adf05a39e923771ec0e0c33b1630dca212399e8ec9ff35cc88d96f
font_01_sfnt_off0000f7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A9 10572 bytes
SHA-256: 1b1909c906e4523d24c3cc56d40cab6a75995a366d99a4c135ea1adf9d776a3d

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