Malicious PDF — malware analysis report

Static analysis result for SHA-256 d54c1327505afc2f…

MALICIOUS

PDF

118.9 KB Created: 2021-03-11 11:26:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 77b06fba9707b50df4e9a8fafdb0e3be SHA-1: 95af200ffb735cec88a84da02246f3bd5c6ad134 SHA-256: d54c1327505afc2fd6201450e6fa96de8174c874df64716c8c80f45d9376309d
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://bologen.ru/wix?keyword=new+jersey+plan+vs+virginia+plan+pdf PDF link annotation
    • http://tiserud.22web.org/what_are_the_challenges_of_environmental_ethics.pdfIn PDF document text
    • http://circulshtangcalip.website/leadership_competency_example_answers_civil_servicem291b.pdfIn PDF document text
    • http://save50.pro/octosniff_cracked_download8783i.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/66343436344.pdfIn PDF document text
    • http://dostafood.xyz/tepusinivamefakikuxiganok8l7fs.pdfIn PDF document text
    • https://cdn.sqhk.co/gasajolop/ghjdtUa/jajelonavajefavilabemo.pdfIn PDF document text
    • http://mojenisijita.mywebcommunity.org/grade_2_math_questions_and_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/jiibDic/44682554179.pdfIn PDF document text
    • http://fitokaps.xyz/harley_sportster_1200_service_intervalsconsw.pdfIn PDF document text
    • http://gajelifuluxapov.mywebcommunity.org/beluwinufiwaxivepo.pdfIn PDF document text
    • http://thedefenseforge.com/pafavunorafobovabalenofukn6x5u.pdfIn PDF document text
    • http://mifilud.iblogger.org/loxelijorokizidor.pdfIn PDF document text
    • https://cdn.sqhk.co/ketejeti/cIghAha/space_engineers_spaceship_designs.pdfIn PDF document text
    • http://kitazixozakabu.sportsontheweb.net/34660602872.pdfIn PDF document text
    • http://sollabs.xyz/cafeland_mod_apk_2._0._30gkpdl.pdfIn PDF document text
    • http://blog-millionaire.buzz/wizudijarerezijemagufijmkvs6.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/mozedijiz/viva_video_editor_for_laptop.pdfIn PDF document text
    • http://kuxexulotubi.epizy.com/barovolifabed.pdfIn PDF document text
    • http://devonefon.epizy.com/epic_games_apkpure.pdfIn PDF document text
    • http://baxovebiw.rf.gd/24414222710.pdfIn PDF document text
    • http://tavamikilav.myartsonline.com/muxojemawawabuduralebuz.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/wefisogajopupikadobun.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_off0001977a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1977A 5508 bytes
SHA-256: 7071a5fd491344fc497e58fc6cd740ae3544f5950572baec63b3e2093b3113dd
font_01_sfnt_off0001aa6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA6F 10264 bytes
SHA-256: acf729d4ac2a0ded84c56212a4e4287dbbc16f269215a62523d50eca1e8c8987

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