Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9be080a44c86ce…

MALICIOUS

PDF

79.9 KB Created: 2021-06-04 05:50:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a30bd0485be92e6d9155973d5ee5d09c SHA-1: c4d45c763eb59da8be8422c440e7fbc398465d75 SHA-256: 9d9be080a44c86ce383203ca21eb693dc2b81c22d23675c801aac19d037bf779
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous external URLs, with a significant number of these pointing to disposable hosting. The primary purpose appears to be directing users to other potentially harmful or deceptive content, rather than containing a direct exploit within itself. No scripts were extracted, but the structure suggests a phishing or SEO spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://huntic.ru/pbw?utm_term=convertir+pkpass+pdf PDF link annotation
    • https://vugigedekamem.weebly.com/uploads/1/3/4/3/134339685/30229a791e.pdfIn PDF document text
    • https://zuwexonoporij.weebly.com/uploads/1/3/5/3/135317719/jeworovafokope-gexem-fikisoxitosebos-jawakuzadut.pdfIn PDF document text
    • https://mixajogidevo.weebly.com/uploads/1/3/0/9/130969427/rased-kunanilolobube.pdfIn PDF document text
    • https://lugifepitel.weebly.com/uploads/1/3/2/7/132710690/timas.pdfIn PDF document text
    • https://gaviwejijeto.weebly.com/uploads/1/3/3/9/133997776/5225430.pdfIn PDF document text
    • https://revininone.weebly.com/uploads/1/3/1/3/131380081/lanobiv.pdfIn PDF document text
    • https://molefagis.weebly.com/uploads/1/3/5/3/135311004/4682406.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/f83197f1-bc35-471d-8114-4cc96d63c7f5/what_is_quantum_physics_for_dummies.pdfIn PDF document text
    • http://kalunagepigi.pbworks.com/w/file/fetch/144425433/hotel_housekeeping_checklist_form.pdfIn PDF document text
    • http://natofuke.pbworks.com/w/file/fetch/144587820/ardupilot_apm_2.8_flight_controller_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebc904f0-86d9-4b75-9a2b-7f136899e625/fukow.pdfIn PDF document text
    • http://depowota.pbworks.com/f/16203883029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3f389d4-cddb-49c1-abb6-69ae0f1311bd/sugazogukokuxovesarizud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ac2c3b-93b5-4e10-ace9-3e68a85a8652/six_trigonometric_functions_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29d06494-0eaf-476d-8f41-eda3aaea879f/dulimenovoto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91cba6c0-bd91-452d-bd64-d390c5eafec5/electrical_symbols_for_drawings_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d7249ad-e3d5-4d7f-9a67-9703972bbb45/best_reading_comprehension_workbooks_for_4th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6deed5ae-0b8c-4be5-a560-a373b921993c/cateye_strada_slim_wireless_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d630f1c-c239-471b-a188-6d727c29b843/tufipidazuzika.pdfIn PDF document text
    • http://refarumiba.pbworks.com/f/atoms_subatomic_particles_and_the_periodic_table_worksheet_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/201f70f3-5123-431c-a90c-26398d812199/sobowuximodipek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6b8cbf3-095b-4c39-b9be-7dd0330c874f/15354832080.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d98ab2fc-e6e3-45ba-a580-24792af36a3b/tifom.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_off0000f999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF999 5032 bytes
SHA-256: b0fdad851518acd3e8bc8505710342f3f0a7454990470770c4a16b48e410c825
font_01_sfnt_off00010acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACC 11668 bytes
SHA-256: bf85a2088545e00698609d56b380fa61dc91aceaa65460beddb4a71eb4d948f6

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