Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd155df5c74ee88a…

MALICIOUS

PDF

75.3 KB Created: 2021-03-30 17:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 6e7938e7e4288e4f5421c650a4e953cf SHA-1: 26f3ec670f5605bd1227c73ebcf0359c7e5d7723 SHA-256: bd155df5c74ee88acc6565d03b2b5ad3664e95f6b793eff728fd48eec1336aa2
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. It contains numerous embedded URLs, many pointing to disposable domains and link farms, suggesting a phishing or malware distribution scheme. The presence of 'utm_term' parameters in some URLs indicates tracking or redirection for malicious campaigns.

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 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://mezovuduw.ru/aws?utm_term=how+to+intercept+in+madden PDF link annotation
    • http://bionatur.space/9152004344lpi8k.pdfIn PDF document text
    • https://loratabupufedev.weebly.com/uploads/1/3/2/6/132695903/jisubupew-dulunesopek-gepalatotuw-kilivutolu.pdfIn PDF document text
    • http://regse.website/19545731592s7s0l.pdfIn PDF document text
    • https://mifimixaxenerut.weebly.com/uploads/1/3/3/9/133999571/baxasene.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/jbTie9e/terraforming_mars_project_cards.pdfIn PDF document text
    • http://worldworkbook.com/how_much_does_a_harman_pellet_stove_weighh1cuh.pdfIn PDF document text
    • http://lezeninimi.medianewsonline.com/quran_arabic_madina.pdfIn PDF document text
    • https://lewagezu.weebly.com/uploads/1/3/4/3/134369469/jelavumivazuxu.pdfIn PDF document text
    • https://dilukali.weebly.com/uploads/1/3/4/5/134584555/wukomimen.pdfIn PDF document text
    • https://cdn.sqhk.co/navififoro/R3oZpCx/ivry_hall_alabama.pdfIn PDF document text
    • http://segway-wheelchair.ru/best_online_site_to_learn_koreanyuq1p.pdfIn PDF document text
    • http://salonly.xyz/14951058585rr0ym.pdfIn PDF document text
    • https://cdn.sqhk.co/tuvameboroke/4khfpgj/image_editor_free_download_for_windows_7.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/doxitonndrg9.pdfIn PDF document text
    • http://detonicufficiale.website/excel_master_detail_sheetl2n23.pdfIn PDF document text
    • https://cdn.sqhk.co/xalurubizud/6jazjg3/48498235398.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lozuzotatuvibow.rf.gd/kixowepagibagaxod.pdfIn PDF document text
    • http://gonegexunu.myartsonline.com/75762199.pdfIn PDF document text
    • http://jexuzutipeku.epizy.com/hannah_arendt_totalitarianism.pdfIn PDF document text
    • http://bosotosevizava.rf.gd/30913815106.pdfIn PDF document text
    • http://namavorudil.epizy.com/lavadoseg.pdfIn PDF document text
    • http://rijujala.epizy.com/raksha_bandhan_song_pagalworld.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_off0000eb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB32 5060 bytes
SHA-256: 5421f2d6fb42e441d32e7c9707fa5c3c3dcd41315f6d541575dbe009b5c16903
font_01_sfnt_off0000fc5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5D 10528 bytes
SHA-256: 7aaca0d1cb5d67c62e3f764a3505e1c6d971456cec9e0f0ce1d7de12ee4305ef

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