Malicious PDF — malware analysis report

Static analysis result for SHA-256 e25d04b897dcb1e5…

MALICIOUS

PDF

119.0 KB Created: 2021-03-14 22:56:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 00918e7648ac63e1f94b75171b8e73b7 SHA-1: b0ef360f2662dd1dd8ea20ecd6d3bed686cdc513 SHA-256: e25d04b897dcb1e5406b37b7bf45e202f2eeaf9776e52c52c845f33fd8e25744
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains and Weebly, suggesting a link farm or SEO poisoning tactic. The embedded URLs and the ClamAV detection indicate malicious intent, likely to redirect users to phishing sites or download further malware. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=minecraft+witchery+mutandis+extremis+not+working PDF link annotation
    • https://gegixigozazewit.weebly.com/uploads/1/3/4/8/134858275/4184b8e6bc.pdfIn PDF document text
    • https://fuviwezajoz.weebly.com/uploads/1/3/1/3/131379384/cf05ec2ca3f3480.pdfIn PDF document text
    • https://vunukufe.weebly.com/uploads/1/3/4/6/134640969/muwenav.pdfIn PDF document text
    • https://remezovegaz.weebly.com/uploads/1/3/1/4/131406605/1875155.pdfIn PDF document text
    • https://nivejuva.weebly.com/uploads/1/3/4/7/134713874/vesef-sikekopiletoz-xaxunukokopi.pdfIn PDF document text
    • https://jolibudowuw.weebly.com/uploads/1/3/4/5/134596284/fijizixivaraziloti.pdfIn PDF document text
    • http://autolombardpro.ru/juwemaranilekijuvivm7l59.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/invisible_cities_italo_calvino_analysisv06hf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393890/normal_5fef0f0199e1f.pdfIn PDF document text
    • http://vnds-v.website/xafiza1tihp.pdfIn PDF document text
    • http://nipokaxa.getenjoyment.net/aspiracion_de_secreciones_bronquiales_procedimiento.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474456/normal_60015c761348b.pdfIn PDF document text
    • http://shopyou.online/2018_ford_mustang_gt_premium_pricej00k0.pdfIn PDF document text
    • http://poboxabirukus.iblogger.org/autograph_audio_songs_ing_com.pdfIn PDF document text
    • https://nobaletakalesig.weebly.com/uploads/1/3/2/3/132302751/d9dca.pdfIn PDF document text
    • https://jezulusawuse.weebly.com/uploads/1/3/4/0/134000263/5897665.pdfIn PDF document text
    • http://murimubijejaba.mygamesonline.org/high_school_biology_notes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464702/normal_601279eceb045.pdfIn PDF document text
    • https://sikufotoxatufik.weebly.com/uploads/1/3/4/4/134458503/volewiwanijepefoje.pdfIn PDF document text
    • https://vaxatimiroxak.weebly.com/uploads/1/3/4/6/134617636/6375491.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dinukafewu.epizy.com/types_of_cohesive_devices.pdfIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/antony_and_cleopatra_characters.pdfIn PDF document text
    • http://japinoxizidunub.myartsonline.com/24385741693.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_off00019457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19457 5732 bytes
SHA-256: f96708cd6ad17ffe5543bcfa0117fd64f933c701d0bec9fd3f95dc0b10b4901b
font_01_sfnt_off0001a7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7E4 11196 bytes
SHA-256: 99d7fbef94297d8d95f0e99ccc2deb3fec666822f5c6f0fc467edfe242de49b9