Malicious PDF — malware analysis report

Static analysis result for SHA-256 b30fc0eac787c37f…

MALICIOUS

PDF

78.0 KB Created: 2021-04-20 20:48:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4360516bcf6d9af38d7cf278da3a4dd6 SHA-1: bcc80da9b7a4b1829a8c74962ef843d811b1c89b SHA-256: b30fc0eac787c37fa79894ce4737615f13c604046bd6c61eeb94da582ec904b9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 trojan threat. It contains multiple embedded URLs, with a primary focus on directing users to 'xezojetit.ru' and 'musofiron.ru'. The document body, though heavily obfuscated, appears to be a lure related to finding IP addresses, suggesting a social engineering tactic to drive traffic to malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://xezojetit.ru/strik?utm_term=how+to+find+the+ip+address+of+a+zebra+gk420d PDF link annotation
    • http://musofiron.ru/wivolezojuwi9ci35.pdfIn PDF document text
    • http://jolixasij.sportsontheweb.net/jusikowimarebawe.pdfIn PDF document text
    • http://hardcreditcheck.info/pelicula_el_lazarillo_de_tormes_2001_youtubem1ldj.pdfIn PDF document text
    • http://useporte.xyz/is_prisoner_b-3087_a_moviej7zj9.pdfIn PDF document text
    • http://quinzsy-studio.design/26032299210vr6he.pdfIn PDF document text
    • http://itdiscount.info/53522158468u78a2.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/ePfSHsd/59252392964.pdfIn PDF document text
    • http://xawikeroteguvu.iblogger.org/predator_generator_2000_coupon.pdfIn PDF document text
    • https://cdn.sqhk.co/tedigedubemi/jfsoYjh/super_clone_watches_review.pdfIn PDF document text
    • http://devedilazabu.medianewsonline.com/academic_research_paper_sample.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lerezazo/hazard_identification_and_risk_assessment_template_victoria.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/ocarina_of_time_intro_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d18f938-9dea-4067-b149-b93345c42ff1/96144967487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c736c024-8f34-4863-af23-8f6e166989eb/what_is_the_rice_to_water_ratio_when_using_a_rice_cooker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d28396cb-8437-43eb-aad6-6dc790cc5c3b/17015791764.pdfIn PDF document text
    • http://kofikirigor.rf.gd/ronuxi.pdfIn PDF document text
    • http://wufizijutema.rf.gd/moca_in_spanish_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/314be99d-d6e8-4542-8692-963a79d35f17/canon_mp160_driver_windows_10_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/227f339e-3b7f-4ac2-99ec-4d1f063dcfdf/surely_youre_joking_mr._feynman_audiobook.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_off0000f261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF261 5940 bytes
SHA-256: d5c5ca835feccd533c5c3af0dc2158ca257813d80fddba10f52139dff036506d
font_01_sfnt_off000106af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106AF 10544 bytes
SHA-256: f2d1a321649158129b06a52f38afbe5e43ca4b0b5b93a1bcdc36325c02942f41

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