Malicious PDF — malware analysis report

Static analysis result for SHA-256 dee5c1ad3953c79a…

MALICIOUS

PDF

70.4 KB Created: 2021-02-04 05:10:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9ed0da9fb86a6feb9d600c11d7487a42 SHA-1: ee179894031ad9fc0fbc6bcd47a7f49a135b95f2 SHA-256: dee5c1ad3953c79ad611711db0c5e0c582be8acfab0a739afddf53874630e4a1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, with a critical heuristic identifying it as a PDF link farm. The presence of URLs like http://erogan24.website/steal_the_show_bookq7gr0.pdf and https://jottigo.ru/123?utm_term=jsl+eavesdropping+answers suggests a phishing or malicious redirection attempt. ClamAV detection and ML classification further support its malicious nature, likely as a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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=jsl+eavesdropping+answers PDF link annotation
    • http://erogan24.website/steal_the_show_bookq7gr0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475571/normal_5ff75e331ac51.pdfIn PDF document text
    • https://sezijaxafiv.weebly.com/uploads/1/3/1/6/131637080/6245084.pdfIn PDF document text
    • http://leqqurint.online/arithmetic_sequence_word_problem_worksheetinib7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469103/normal_5febc743112a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499309/normal_5fcab03c95586.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/harry_potter_themed_halloween_party_foodjd8bz.pdfIn PDF document text
    • http://muldwych.com/39134044839a3fq3.pdfIn PDF document text
    • http://reduslim-siteofficial.site/beko_self_cleaning_oven_user_manualgfpyp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386094/normal_6018df8615c7f.pdfIn PDF document text
    • http://nat-fru.space/solr_in_actionw2wjb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368242/normal_5ff310ed24856.pdfIn PDF document text
    • http://auto-fishing-rods1.club/canon_powershot_sx510_hs_wifi_manualxnxxi.pdfIn PDF document text
    • https://wewivipumi.weebly.com/uploads/1/3/0/7/130775870/walalelekiw.pdfIn PDF document text
    • http://povar2020.site/97823580402v7fce.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/vidadaviwal/ethio_reporter_news._com.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/79364440797.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/android_studio_3_system_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/grade_9_science_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/free_tv_guide_melbourne_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/bangla_song_momtaz_video.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/kizazuva.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD545 5268 bytes
SHA-256: ab153b24f44611bdcfb752d64c928e8b61acfa9492d98918516c170cd9896f24
font_01_sfnt_off0000e750.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE750 10804 bytes
SHA-256: afe9c91035c1cb799207147edcd6ebe1cb1ec28a4466653f97bc5e74cea6a234

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