Malicious PDF — malware analysis report

Static analysis result for SHA-256 64bc064480c670d6…

MALICIOUS

PDF

67.0 KB Created: 2021-02-24 07:25:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 85c184ef1ef2c7930ffa94a990c547e5 SHA-1: 304d980102d3f5b692a4c965523c4dff53025793 SHA-256: 64bc064480c670d6403372ade1a89d2ec06f79c3fe6e9a62015ac9fc3bf7bf21
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=glencoe+literature+the+reader%2527s+choice+course+4+pdf In PDF document text
    • http://larts.digital/la_la_land_movie_poster_11x17tez7i.pdfIn PDF document text
    • http://dovulup.iblogger.org/stellaris_crime_syndicate_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416792/normal_6017729ea379c.pdfIn PDF document text
    • http://kleomaften.online/derivatives_problems_and_solutionsppgbq.pdfIn PDF document text
    • http://salestore.pro/reported_speech_exercises_for_class_9_onlinehuoza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405197/normal_5fd74f7517225.pdfIn PDF document text
    • http://ledoxune.22web.org/42008636539.pdfIn PDF document text
    • http://life-news.tech/ifttt_set_alexa_alarmiodt2.pdfIn PDF document text
    • http://wivejudotimog.22web.org/brindisi_report_incidente_superstrada.pdfIn PDF document text
    • http://uggi-ugg.com/how_to_file_a_reverse_discrimination_lawsuitugecf.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/fp22kGm/momefetedagu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sofejovizifufin.epizy.com/wufuwilokogoroto.pdfIn PDF document text
    • http://basutija.epizy.com/acueducto_romano_de_segovia.pdfIn PDF document text
    • http://zatafefot.rf.gd/black_panther_full_movie_in_tamilyogi.pdfIn PDF document text
    • http://renenubulasuf.rf.gd/reflexive_pronouns_worksheets_with_answers.pdfIn PDF document text
    • http://ralepixevoz.epizy.com/semozixidinabutakagal.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCFC 5280 bytes
SHA-256: 8dfa8d827f5cc91d929bd91e9611b1c01e74f9d13763f76d1dc39879176d1cac
font_01_sfnt_off0000ceec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEEC 9716 bytes
SHA-256: 1eafabebcdfd7b1a47827782539f6e16408cd87c68bda0083d30871cd9788e34
font_02_sfnt_off0000f02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176