Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2ee3e0e47d0795c…

MALICIOUS

PDF

73.1 KB Created: 2021-03-01 02:48:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 847015668d80699ca913e71e0ce678f9 SHA-1: e7993cebabc3d5e91e985b71d0de88945057e3c0 SHA-256: e2ee3e0e47d0795c8817a949c2a96cbc2999e4e604c195bed78488f55ec1b572
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=what+is+the+new+girl+scout+cookie+this+year PDF link annotation
    • http://pijakonojimuw.iblogger.org/jopojab.pdfIn PDF document text
    • http://trells.space/92235534352ikdx4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424024/normal_601a6416e473a.pdfIn PDF document text
    • http://gefaveje.22web.org/78842153419.pdfIn PDF document text
    • http://zubosoxi.22web.org/the_hierophant_love_tarot_guide.pdfIn PDF document text
    • http://freds.space/yu_gi_oh_gx_torrentw67zd.pdfIn PDF document text
    • http://rubyshup.space/53375827886vlddt.pdfIn PDF document text
    • http://vodigonujeviji.iblogger.org/client_services_manager_job_description_for_resume.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/62189957377.pdfIn PDF document text
    • https://bumarotijij.weebly.com/uploads/1/3/4/6/134688095/73613b3efe59.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/wupar.pdfIn PDF document text
    • http://gorosojipi.rf.gd/ambedkar_movie_in_telugu.pdfIn PDF document text
    • http://tiwebukesa.epizy.com/91412846240.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_off0000e0b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B0 5332 bytes
SHA-256: 769ad4bf15d154516cd8df9512e5ec2ce70c77c1e2b70296cbe4d4f829b85ba2
font_01_sfnt_off0000f2ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EC 10768 bytes
SHA-256: d7c1983df11b51cb3f1f2273dfbe0b352d4463155bb019e8dde02509050700c9

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