Malicious PDF — malware analysis report

Static analysis result for SHA-256 68c1b1126884195d…

MALICIOUS

PDF

76.3 KB Created: 2021-04-12 00:02:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 667a9d3dc481800e30dff5451e956559 SHA-1: c7a9b9180bb7ad53042f2c4ebcb0236861fdd874 SHA-256: 68c1b1126884195deccbaf7d41bca657b15fd2ac5ca03f20adf10760486a0a3b
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 0.9998

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://bologen.ru/strik?utm_term=how+to+start+cuisinart+electric+pressure+cooker PDF link annotation
    • http://pevazaw.mypressonline.com/rebalotigenej.pdfIn PDF document text
    • http://tijudiwulewanuw.getenjoyment.net/watijusekumaxufajax.pdfIn PDF document text
    • http://wugobolemisezam.22web.org/atma_bandhuvu_movie_songs.pdfIn PDF document text
    • http://bobixina.getenjoyment.net/keto_made_easy_cookbook.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/vilatulova.pdfIn PDF document text
    • http://zuxenegobepejij.22web.org/63295807862.pdfIn PDF document text
    • http://pixizosusonaxij.sportsontheweb.net/22397584100.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/d918d58a-76ae-432b-8599-0cb147dea8a5/sylvia_day_crossfire_film_magyarul.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/gukowilafuk.pdfIn PDF document text
    • http://pakatikik.epizy.com/92978271620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79462d71-f093-4e45-bf98-7473dd4180aa/quantum_field_theory_and_the_standard_model_schwartz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d87b2ec9-3fa1-4a4e-bf19-24ceb93de403/distributive_property_of_multiplication_worksheets_7th_grade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fe1c098-7f55-43cc-887b-eca6cd35d9cf/what_is_the_symbolism_in_a_dolls_house.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97139016-8737-4cd6-9a30-ad8b0dcbe786/74735459366.pdfIn PDF document text
    • http://gafodix.myartsonline.com/71268070015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88899420-2d78-4b7c-8931-691e3b36f158/70197951644.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/12546570154.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71aca6ad-ad1d-4c13-8f7b-99c5cf1a1e09/what_is_interior_design_degree.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_off0000ee11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE11 5044 bytes
SHA-256: 06ed53a3e529b87bb54d6ed262954ceb2ce75b6cffef6b29a385329b0aedc95c
font_01_sfnt_off0000ff58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF58 10800 bytes
SHA-256: e01022868540d9fd54e670faeaa1f201152abdecfbf1dfe40fc57af57da658c2

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