Malicious PDF — malware analysis report

Static analysis result for SHA-256 befaa5680d0f90ad…

MALICIOUS

PDF

76.9 KB Created: 2021-02-18 18:28:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 898545c97a4e15b0e3e8ddd08e714ecd SHA-1: f7fa1c5dbb58b3758edf026ff6f338336c8d718d SHA-256: befaa5680d0f90ad3eca96c303b0593e31674212ea270aac7ff449d1d59ac1a0
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to suspicious or disposable domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://maypoin.ru/wb?keyword=merit%20badge%20sash%20pin%20placement PDF link annotation
    • https://cdn.sqhk.co/sisadenev/idNhb81/44217371897.pdfIn PDF document text
    • http://my-favshopg.online/is_netgear_nighthawk_compatible_with_comcast04fwi.pdfIn PDF document text
    • http://sacredname.ru/top_10_ringtones_free_download_telugu4i3iz.pdfIn PDF document text
    • http://copyright-infringement.business/626868833068g8xz.pdfIn PDF document text
    • https://cdn.sqhk.co/kuzosexiwugu/jbibav0/caption_for_friends_group_photo_in_punjabi.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/gcgdgd4/starfall_reading_and_writing_journal.pdfIn PDF document text
    • https://kuduxuke.weebly.com/uploads/1/3/5/3/135323303/varubowo_wurap_retofukizeziz.pdfIn PDF document text
    • https://wimazuwog.weebly.com/uploads/1/3/0/7/130740080/vezavotabemuvegi.pdfIn PDF document text
    • http://italiahot.space/choodiyan_ringtone_pagalworld7u3uk.pdfIn PDF document text
    • https://gavojaxuwutik.weebly.com/uploads/1/3/4/3/134319320/nikelaxibuvol-digizudafo-rejizigivakoxoz-xelusawikupu.pdfIn PDF document text
    • https://fukoroxovelamos.weebly.com/uploads/1/3/0/7/130776486/6313418.pdfIn PDF document text
    • https://mebotorafegamor.weebly.com/uploads/1/3/0/7/130739377/57b2ed.pdfIn PDF document text
    • https://toralalog.weebly.com/uploads/1/3/1/4/131436966/0636757.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvisisitinu/hjTjOev/hockey_goalie_chest_pad_sizing_chart.pdfIn PDF document text
    • https://jerijumewatopod.weebly.com/uploads/1/3/5/3/135330781/tajadenuzenusu.pdfIn PDF document text
    • https://nelunozulugekis.weebly.com/uploads/1/3/0/7/130739970/8920994.pdfIn PDF document text
    • https://xajerunufunofe.weebly.com/uploads/1/3/1/3/131378991/4c4e86876e204a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuwoguki.epizy.com/63553540889.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/venice_the_series_season_3_episode_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/candlewood_lake_fishing_reports.pdfIn PDF document text
    • http://dixadenidufudu.epizy.com/phenyl_chloroformate_solubility.pdfIn PDF document text
    • http://fapomotomojopog.epizy.com/adverbs_of_place_worksheets_with_answers.pdfIn PDF document text
    • http://zepedijuva.epizy.com/concussion_protocol_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/vidmate_original_video.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_off0000ed3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED3D 5632 bytes
SHA-256: ed88f8dde7b7d966c49dbc36d059ec97491e1bb0d288018e83e00619131bb4f5
font_01_sfnt_off0001003b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1003B 11148 bytes
SHA-256: b353f76acb5288a7a2a29fd57495c065913d0188d79718b309d9d0a7caff68c4

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