Malicious PDF — malware analysis report

Static analysis result for SHA-256 45ee8534784e2f64…

MALICIOUS

PDF

72.5 KB Created: 2021-02-17 19:16:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 3a29012309c3de83951df75db0428f81 SHA-1: 14f34eb0727ce1c8baca0213ef4d6d268e848e27 SHA-256: 45ee8534784e2f64473773f32f78458fc94ac3feed114bad8cee3e8342c7e74d
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, and is flagged by ML classifiers and ClamAV as malicious. The embedded URLs, such as 'https://jottigo.ru/123?utm_term=skycaddie+golf+watch+update', suggest a phishing or credential harvesting attempt disguised as a software update. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious intent 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
  • 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.
  • 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/123?utm_term=skycaddie+golf+watch+update PDF link annotation
    • https://tuxuboninivufos.weebly.com/uploads/1/3/4/4/134478209/lomir-fisukixabodoz.pdfIn PDF document text
    • http://swiss-gear-top.xyz/philip_glass_echorus_sheet_music4qz52.pdfIn PDF document text
    • https://gazodajatara.weebly.com/uploads/1/3/2/7/132712558/forefopap_galafir_xutiduxedi_gunofitirak.pdfIn PDF document text
    • https://mozesejute.weebly.com/uploads/1/3/1/3/131380505/b5587cd.pdfIn PDF document text
    • https://poxatekegevu.weebly.com/uploads/1/3/4/7/134753674/8746445.pdfIn PDF document text
    • https://miwolugakibu.weebly.com/uploads/1/3/1/3/131383652/06c39.pdfIn PDF document text
    • http://keto-s1.com/which_is_the_best_bible_version_to_buyzgbxw.pdfIn PDF document text
    • http://differencecheats.net/81133322582a6rax.pdfIn PDF document text
    • http://gipilunafa.iblogger.org/20290796732.pdfIn PDF document text
    • https://rifelejoxew.weebly.com/uploads/1/3/4/3/134330737/9827312.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/matogapibelifiv/noun_form_of_word_anticipate.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/744916246.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/zigeunerweisen_double_bass_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/get_api_key_for_google_map_android.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_off0000dcfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFA 5504 bytes
SHA-256: 3bfca9f71cc4a182ba790d5421299f6a7db555fde396820c5c230ff95b483369
font_01_sfnt_off0000efdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFDD 10848 bytes
SHA-256: f6887fe488cf4b0dbde8fd488a8115a2773c1b1cdc7e8b67aae51982af0c932f

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