Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0053f8b1e76f7fa…

MALICIOUS

PDF

80.9 KB Created: 2021-03-09 09:27:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ea9e63da196dfda0eefd6f4024c870b1 SHA-1: 2840e125751c8404ff715e797708414baa4896d4 SHA-256: e0053f8b1e76f7fa7cf2fa3730a259abd77665760619e358a4a949e223a2fded
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a large number of embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The presence of external URIs and the link farm heuristic strongly suggest the document's purpose is to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://lozipotod.ru/strik?utm_term=kenneth+cole+reaction+watch+review PDF link annotation
    • https://woninulanomawij.weebly.com/uploads/1/3/4/6/134670754/nasetikapebenan.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/eiehbgc/91073784996.pdfIn PDF document text
    • https://rupibofog.weebly.com/uploads/1/3/1/6/131607232/zujefotakezokinaz.pdfIn PDF document text
    • https://vixixufabajuwe.weebly.com/uploads/1/3/1/1/131163632/finatov-fagepuzimumij-sizopuxaturub.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelemusib/hgglmid/keyboard_voice_application.pdfIn PDF document text
    • http://smartbright.club/dimofognvov.pdfIn PDF document text
    • https://tipuzinugex.weebly.com/uploads/1/3/2/6/132682040/famizad.pdfIn PDF document text
    • http://bilkan.fun/bereket_tesfaye_songsyx42x.pdfIn PDF document text
    • http://kasovipitafo.22web.org/intelectron_motion_detector_security_light_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/Rhf0hii/knife_block_insert_for_drawer.pdfIn PDF document text
    • http://juilopkiretlo.ru/711092710318pce3.pdfIn PDF document text
    • http://laithub.pro/62717261136ov8hc.pdfIn PDF document text
    • https://cdn.sqhk.co/josozudibud/d4ifin0/school_business_manager_jobs_merseyside.pdfIn PDF document text
    • https://zodemabu.weebly.com/uploads/1/3/4/8/134896511/zuwavofaw.pdfIn PDF document text
    • https://cdn.sqhk.co/xudapurofoz/P8mU4gd/xopikivusojuluzusuxim.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/667f5c74-996d-4cd2-84b3-52d78d816973/counting_stars_drum_sheet_music.pdfIn PDF document text
    • http://tanozetodane.rf.gd/information_security_standards_template.pdfIn PDF document text
    • http://lexawelezalum.epizy.com/extent_report_testng_selenium.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0cc3a76-6562-40fa-afe7-90d060f13627/juegos_del_hambre_sinsajo_reparto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42d42043-b46b-4299-9891-033a04fe74ec/39866124578.pdfIn PDF document text
    • http://kesoriza.epizy.com/kepawazosokasatiluz.pdfIn PDF document text
    • http://pazutoxun.epizy.com/anfotericina_b_efeitos_colaterais.pdfIn PDF document text
    • http://tirujukixiw.epizy.com/fozebilaxomatevezinul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d99c0a0-a94c-4b0c-a427-9aaaffb7ac98/how_long_does_a_pentair_intellichlor_last.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_off0001017e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1017E 4828 bytes
SHA-256: 8df2139efe5e8ec0dc10d0df613987be070eaafff9fd13114549ad192a02e1aa
font_01_sfnt_off00011202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11202 10544 bytes
SHA-256: a4b8a393d65cffbdd1899183bd6697c2d9a1a2a57f41177df0b7c6a06b0ed370

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