Malicious PDF — malware analysis report

Static analysis result for SHA-256 6529f66c8fbd1c25…

MALICIOUS

PDF

69.4 KB Created: 2021-03-16 10:07:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 2a8a16b042b471615818cbd833c7cada SHA-1: 575c7755da65cc3e767ab740163d0f6d37d7d9a1 SHA-256: 6529f66c8fbd1c256f64201f384d9676cf46b7701377810fe2083a292d3f1a72
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the PDF structure strongly suggest it's designed to redirect users to malicious sites, likely as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 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://kuzutuzo.ru/wix?keyword=bustopher+jones+chords PDF link annotation
    • https://cdn.sqhk.co/dujagazatad/jhdnZjg/classic_arcade_games_for_ios.pdfIn PDF document text
    • http://lunesygets.xyz/dances_with_wolves_study_guide_answers40awp.pdfIn PDF document text
    • https://bisetegu.weebly.com/uploads/1/3/4/5/134528498/1432105.pdfIn PDF document text
    • https://cdn.sqhk.co/sofawaju/ehjDJie/leafcutter_ant_city_brazil.pdfIn PDF document text
    • https://baxelawinojiw.weebly.com/uploads/1/3/4/3/134333718/bolim.pdfIn PDF document text
    • https://vezijukifi.weebly.com/uploads/1/3/3/9/133997169/1951255.pdfIn PDF document text
    • http://anbieterbewertung-autoscoutch.com/pipuzuradiszu1x8.pdfIn PDF document text
    • http://fc-aromat.ru/archetypal_literary_criticismkt4m6.pdfIn PDF document text
    • http://alsamcctv.com/12629252371hc1mv.pdfIn PDF document text
    • https://bovatukal.weebly.com/uploads/1/3/0/7/130739183/tesisepere.pdfIn PDF document text
    • https://cdn.sqhk.co/tobijoge/WK5ggrd/joker_dc_comics_wikipedia.pdfIn PDF document text
    • http://comp-arenda.site/what_does_intercession_mean_in_the_bibleit84u.pdfIn PDF document text
    • http://tiktokfrance.fun/bexley_grammar_sixth_form_entry_requirementsl8iav.pdfIn PDF document text
    • http://fb-ig-violation.com/jumezo9qybf.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/gtijQgg/54459568542.pdfIn PDF document text
    • http://g2am2e.xyz/mixefbzhi5.pdfIn PDF document text
    • http://medyahanem.com/deviation_child_support_guidelines_washington_stateyrtp0.pdfIn PDF document text
    • https://jipoditilab.weebly.com/uploads/1/3/1/4/131407274/5874217.pdfIn PDF document text
    • http://world-wild-shop.com/faraway_2_jungle_escape_level_192ax7a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd1e861e-9418-486a-a54d-dd553dd4ec95/hickman_sea_sled_lines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2642d387-3992-4687-a92e-9711245d199d/36021886318.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db5cf0d8-0c9b-4eca-af06-d78d31fa5d78/dewalt_10_inch_miter_saw_cordless.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da58f782-9e1b-4a5a-a86b-38950dc70a41/29787844136.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d98d71e2-46e9-41b6-b11c-07650df652c1/90364766079.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_off0000d2b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B7 5044 bytes
SHA-256: 32b45a8f766f2550d099bc1b13579d7e51f855d4694425b7cad94d6c192e11ce
font_01_sfnt_off0000e3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E1 10600 bytes
SHA-256: 0b3366f9c65209387e6c85adf219a9c3445f78954ad2bed29fc8dfb495d5b912

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