Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c39bd024d73cba…

MALICIOUS

PDF

76.0 KB Created: 2021-03-14 12:31:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6a3d5a916c3b7cb4ec24b72b36a2d598 SHA-1: 96ea7a265655a681ed87b4e1b501eb3a7e4a8a07 SHA-256: b0c39bd024d73cba5a9904f3b42784c0a4d2a9e1243cea7e21e42f3e162bf6f7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/wix?keyword=hill-rom+advance+bed+service+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4377936/normal_602051c56d340.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369651/normal_5fe452a9c3779.pdfIn PDF document text
    • http://fikepoj.22web.org/pepox.pdfIn PDF document text
    • http://pudirexuzil.iblogger.org/callus_formation_on_broken_bone.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/89cf6afc-8c2e-41fd-8cf0-d7a23955581d/musarojufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d89b87d-47ad-4124-8f13-bfb7c9d33d6c/gagemabotopapa.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/saga_cazadora_de_hadas_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a4e6723-686e-4078-aea5-db5531c4b615/sorulumagadusosolozal.pdfIn PDF document text
    • http://relizaki.epizy.com/aflac_cancer_benefit_claim_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb592f72-e023-4fc8-8945-a6b07e111023/who_is_nadya_in_the_tattooist_of_auschwitz.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/how_to_an_argumentative_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80bb1346-91d1-4520-b2c1-ee4d0c63c7fd/what_does_proverbs_11_30_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/beautiful_mind_movie_dual_audio_free.pdfIn PDF document text
    • http://revupeponalewuj.epizy.com/chemistry_zumdahl_9th_edition_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/sabimodakodulifizuwomum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f778aed-49c1-4336-93ef-df665c0e700d/funulimibukiziferuxamozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fc454ff-ca5f-4119-8eaf-d782412cd1cf/why_does_my_thermostat_say_system_wait.pdfIn PDF document text
    • http://mubebaxele.epizy.com/virokebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a8bb43f-274e-42ae-bd97-f981b6e86b10/what_is_peoples_republic_of_bangladesh.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a56df6e-6bcc-4a6b-9db1-fe739fe216bf/vubetibid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/438cddbf-b407-4d8e-a856-94bda405da4d/speak_with_distinction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb701eb8-15d2-4f22-89a9-23a3a2f78c04/what_is_parallel_structure_in_literature_examples.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_off0000e735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE735 5280 bytes
SHA-256: 54d18d310d2435c314613af874dbf13fc9ba0c4794272bc8762fa2768956dadb
font_01_sfnt_off0000f912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF912 11652 bytes
SHA-256: 2c742cfab0471d61541305714944ebd367a9b34141d9a5933c0f5558a37353de

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