Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e781ee72c8e9184…

MALICIOUS

PDF

70.0 KB Created: 2021-02-22 09:07:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b0cc1a257831d2764e03acb4e6442788 SHA-1: f3ad3fdc6173294f03a1743e83f56d24c5b0c732 SHA-256: 1e781ee72c8e91841818de6ac2b500291ebfb2c8d12e17834ab0bf02a5f12921
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with the primary one being 'https://baarspo.ru/strik?utm_term=what+five+factors+influence+the+climate+of+a+region', likely serving as a lure to a malicious site. The document body, though heavily obfuscated, suggests a question intended to trick the user into clicking the embedded link.

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://baarspo.ru/strik?utm_term=what+five+factors+influence+the+climate+of+a+region PDF link annotation
    • https://cdn.sqhk.co/loxosefivipo/if0hdPV/cookie_clicker_unblocked.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379603/normal_5fee1276190e5.pdfIn PDF document text
    • https://cdn.sqhk.co/modurasisuwu/zkhhegc/24879678668.pdfIn PDF document text
    • https://pofivotelovij.weebly.com/uploads/1/3/4/3/134310926/209fceb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486356/normal_6024f4d04d0b7.pdfIn PDF document text
    • https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/8bf097dc5222f.pdfIn PDF document text
    • http://jonoxosu.iblogger.org/my_best_friend_dog_groomer.pdfIn PDF document text
    • https://topuwozusap.weebly.com/uploads/1/3/4/8/134869447/e7242f8.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/haqYhct/directv_channels_list_usa.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/sagigesapiladu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366969/normal_5fcf059d779bb.pdfIn PDF document text
    • http://xapizokawe.iblogger.org/holt_mcdougal_geometry_chapter_11_test_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xigufogadenake.epizy.com/disguised_remuneration_loan_charge_reporting_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/rogugagatuf/87044458486.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/gumebelegonenewe.pdfIn PDF document text
    • http://xoviketi.epizy.com/gudokiwisatupojafamedave.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/rasojilaxovinado.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_off0000d6fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6FE 5368 bytes
SHA-256: c3975824686385660de32132cc9c8c606a83fd030e547b3176a7f43a48304efb
font_01_sfnt_off0000e92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE92E 9644 bytes
SHA-256: 0d2ae1ba5d6984363983af0b9a8f44b35129a061d1c8e372fe9557852b545649

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