Malicious PDF — malware analysis report

Static analysis result for SHA-256 48456501aacc1b9d…

MALICIOUS

PDF

157.5 KB Created: 2021-04-02 23:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d7447d476d05c7623aace1692aa51a0d SHA-1: aafd6555f39d101641f7da9e3eae80c6baa6abb0 SHA-256: 48456501aacc1b9d5e2c685d4adae8e369fe5588a23661a33353563a95e8af34
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://xajibur.ru/strik?utm_term=marketing+management+class+12+case+studies PDF link annotation
    • https://cdn.sqhk.co/zivuputid/3ig65ie/dead_end_fire_apparatus_access_road_turnaround.pdfIn PDF document text
    • http://artelamp.store/18131659533c0jk.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/jfbieLG/viridian_forest_theme.pdfIn PDF document text
    • http://devgm.design/fernando_sor_studies_taboyw3q.pdfIn PDF document text
    • http://it50disconto.info/lamborghini_song_video_pagalworldwalcq.pdfIn PDF document text
    • http://fuxukibegub.iblogger.org/detective_conan_theme_violin_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/luwukamuku/aij4ghC/brooks_ghost_12_running_shoes_reviews.pdfIn PDF document text
    • http://tonalemeketav.66ghz.com/71291864038.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/e0Si08q/39923810504.pdfIn PDF document text
    • https://cdn.sqhk.co/xuteposidobi/iiaife6/42826628117.pdfIn PDF document text
    • http://teksalle.xyz/zufopupenisijajagaof2q.pdfIn PDF document text
    • http://d2-club.ru/officejet_pro_8600_plus_change_inkmyj3r.pdfIn PDF document text
    • http://mivifukatovaga.getenjoyment.net/63059595566.pdfIn PDF document text
    • http://getodupelipod.iblogger.org/android_republic_optc.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/kesumasaka/exponential_growth_functions_worksheet_answers.pdfIn PDF document text
    • http://fobifuv.epizy.com/kipupaluwikejeludelu.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/scid-5-cv_clinician_version.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/3008765491.pdfIn PDF document text
    • http://vowojuxibaxo.myartsonline.com/saga_rules_1st_edition.pdfIn PDF document text
    • http://sinusudixuxuwad.atwebpages.com/70521809369.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/93116653391.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22D07 5512 bytes
SHA-256: e7359b9dfb91dcf9024ee7e9ea39ce23e9c046b23aeb89d8bd3a653b3cb15899
font_01_sfnt_off00023fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23FC5 11896 bytes
SHA-256: 7968fd0a8da1576bcb5278b2b97df1577e7a38066b58d4d76582b058a1b82efa

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