Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e461e940e87851a…

MALICIOUS

PDF

89.0 KB Created: 2021-03-23 15:55:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 8aecd061c367e1647ee58ab473a3fa99 SHA-1: 6427b18e40ba29f6c7523d1903f39197139a12d5 SHA-256: 9e461e940e87851a459a3ad448568cc8ef4a320e48ec1b7d72de54683a402ac6
126 Risk Score

Malware Insights

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

The sample is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable hosting and are likely part of a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to 'lyrics in tamil pdf', which is a common tactic to disguise malicious links.

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://soxebez.ru/award?keyword=aditya+hrudayam+stotram+lyrics+in+tamil+pdf PDF link annotation
    • http://xotizel.iblogger.org/acronis_disk_director_12_license_key.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374022/normal_5fe0541729e7e.pdfIn PDF document text
    • http://eduha.online/55248361529euyf7.pdfIn PDF document text
    • http://jobauthor.online/how_to_use_singer_brilliance_618098dq9.pdfIn PDF document text
    • http://pipvip.ru/bawisapepezar3y7ei.pdfIn PDF document text
    • http://blog-millionaire.buzz/fumekagumopizedogujepo6n9jd.pdfIn PDF document text
    • http://gonzo-3d.com/sufakegotusylch.pdfIn PDF document text
    • http://kimiter.medianewsonline.com/mercruiser_4.3_engine_oil_capacity.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/29645134378.pdfIn PDF document text
    • http://libralab.digital/cs_go_android_onlineq281n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392193/normal_602ee15171f22.pdfIn PDF document text
    • http://fly-drive.online/how_to_transfer_a_call_nec_phonezpdik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413473/normal_60258c9ccf76a.pdfIn PDF document text
    • http://sovefureze.iblogger.org/gubixosavisutifesur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://nawugem.epizy.com/bazel_android_studio.pdfIn PDF document text
    • http://zimadiwiv.rf.gd/logic_pro_keeps_saying_system_overload.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/batman_killing_joker_full_movie.pdfIn PDF document text
    • http://joxesovifelerav.epizy.com/51096681376.pdfIn PDF document text
    • http://taxowojo.epizy.com/75923425498.pdfIn PDF document text
    • http://dijawazuk.rf.gd/interview_questions_for_manager_position_and_answers.pdfIn PDF document text
    • http://dezinolabebosod.atwebpages.com/11735945363.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C4 5484 bytes
SHA-256: 68dadf561270ede4fd4599c9dec0a9e1163e53a9af521655c6165cce2bc1254c
font_01_sfnt_off0000fb4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4A 28916 bytes
SHA-256: 6516b5d5b886db97e62cc78215e579a686a539cf602efa30156dfb6c3f997ce6
font_02_sfnt_off00013219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13219 9944 bytes
SHA-256: 8c9338a43d4bca62e9f70926cb2c5671c3cd9b35043155554e9f00da000eab58

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