Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eab89c5efdde618…

MALICIOUS

PDF

79.2 KB Created: 2021-05-16 23:59:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 57ae1a05e1bd35c16e29edbcb45ccb78 SHA-1: 9d3bb099dd1ca4d27b74e60871793b938e027fdc SHA-256: 7eab89c5efdde618da2131f78c287e9159cab37a803adce04f8245f5029f6de7
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support this. While no scripts were explicitly extracted, the nature of the links and the overall structure point towards a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/strik?utm_term=how+to+know+ipo+date PDF link annotation
    • https://lopewibuwo.weebly.com/uploads/1/3/4/9/134903232/wuferar_xaxedejofenevur_lusujiwefa.pdfIn PDF document text
    • https://zatenumidepav.weebly.com/uploads/1/3/0/7/130776458/3571760.pdfIn PDF document text
    • https://kilekofizinovi.weebly.com/uploads/1/3/3/9/133997912/rinupozumogar_daluno_vuxukelixe.pdfIn PDF document text
    • https://lumekagaxegi.weebly.com/uploads/1/3/2/7/132712489/b25e5539d57.pdfIn PDF document text
    • https://rulorakaduf.weebly.com/uploads/1/3/4/4/134480735/4959805.pdfIn PDF document text
    • https://deremufirig.weebly.com/uploads/1/3/4/8/134854029/dfd332037f.pdfIn PDF document text
    • https://gupijevud.weebly.com/uploads/1/3/1/4/131407369/8427001.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1e5c9289-19ee-4e40-ae77-03f2e727eb38.filesusr.com/ugd/e3c460_2d5a52097c2d4d3a82f933479ffe1e15.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/somamere/bonjour_for_itunes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a8f679a-ddc6-4295-b138-6d0834237e44/is_bioshock_remastered_better_than_the_original.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/14582809150.pdfIn PDF document text
    • https://160e4e15-e27a-4ef2-9b26-f67fc0969a86.filesusr.com/ugd/cbdbb6_70744f48970b4378a3769df4033bac3d.pdf?index=trueIn PDF document text
    • https://cf4de027-7369-46c2-bf93-d69cabef2b5e.filesusr.com/ugd/868b90_18c9c8292c82492492bdf06f412073de.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ece8a76-dabe-40e5-a4e1-ced0a84f98f9/how_to_pitch_a_feature_film.pdfIn PDF document text
    • http://fitariruzazu.epizy.com/effective_presentation_skills.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca547e0d-bcfb-41da-ae09-bcdc1396b294/96394034100.pdfIn PDF document text
    • http://vojapexa.rf.gd/administrator_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6aa57f20-56a2-48e0-9181-8b957df9a840/resibow.pdfIn PDF document text
    • http://xubudexev.epizy.com/memorial_announcement_template_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14f8e629-7842-4397-9e1e-fce19176bcf0/68744388512.pdfIn PDF document text
    • http://lonidur.epizy.com/lepexelib.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/80782136613.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_off0000fa67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA67 4764 bytes
SHA-256: c51122f37ecc539347702930b6e14dd4abfb8a65e527c3fdceb33a8542951222
font_01_sfnt_off00010ac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC0 10824 bytes
SHA-256: ed969af2a52d948e66b76fd8dc23d3b2d0b917e8988b61af88a58f4f5eb166bf