Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ca0a0f1f83b3b8e…

MALICIOUS

PDF

87.5 KB Created: 2021-03-12 17:01:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2e26c957e3e9064db10db5110b0c21a3 SHA-1: 7408f8f4072f7359323c2e21047259886a253c0c SHA-256: 0ca0a0f1f83b3b8e0e722e81cf5727589e0d4deceefeb8030a2fa45a55fe399c
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, many pointing to disposable or suspicious domains, indicating a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://xezojetit.ru/strik?utm_term=aquasource+tub+and+shower+faucet+manual PDF link annotation
    • http://xofitazuregokud.mywebcommunity.org/yellowstone_campground_map.pdfIn PDF document text
    • https://waxuxugiw.weebly.com/uploads/1/3/5/3/135312989/diluzipimeku-bajoduninabeko-xifisuto-tamufafupexor.pdfIn PDF document text
    • http://larixulefil.iblogger.org/99542488972.pdfIn PDF document text
    • https://pidujalibogi.weebly.com/uploads/1/3/1/3/131380128/xenonix-kofesaza-bojaw-taveroxalupov.pdfIn PDF document text
    • https://sefokuto.weebly.com/uploads/1/3/0/7/130738721/gawixalezivose.pdfIn PDF document text
    • https://mojoranazo.weebly.com/uploads/1/3/4/4/134403481/1770214.pdfIn PDF document text
    • http://gibelepij.scienceontheweb.net/como_se_hace_un_arroz_integral.pdfIn PDF document text
    • https://jifurutirijiguj.weebly.com/uploads/1/3/4/5/134528482/pokefeb.pdfIn PDF document text
    • http://xowozumevabig.66ghz.com/carly_rae_jepsen_mp4_songs.pdfIn PDF document text
    • http://filuniguwol.22web.org/bsf_online_form_10th_pass.pdfIn PDF document text
    • http://dafokuwagabe.22web.org/7462140609.pdfIn PDF document text
    • http://rezanufeku.mygamesonline.org/descargar_cronica_de_una_muerte_anunciada_completa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://dimaninerif.rf.gd/penatoworekiw.pdfIn PDF document text
    • http://rofanuw.rf.gd/examen_diagnostico_historia_universal_segundo_secundaria.pdfIn PDF document text
    • http://liraperuwuw.atwebpages.com/39054536523.pdfIn PDF document text
    • http://rapixojudod.epizy.com/spring_boot_jdbctemplate_example_mkyong.pdfIn PDF document text
    • http://zaxuzut.atwebpages.com/pofutik.pdfIn PDF document text
    • http://kafokenenore.rf.gd/29221691264.pdfIn PDF document text
    • http://guxodolabisiruj.epizy.com/cristianismo_primitivo_engels.pdfIn PDF document text
    • http://lodavudomajip.epizy.com/65076759487.pdfIn PDF document text
    • http://rodukamofuf.epizy.com/cannot_google_chrome_on_mac.pdfIn PDF document text
    • http://xonifovozub.epizy.com/is_twilight_new_part_coming.pdfIn PDF document text
    • http://gonojelovemu.epizy.com/why_does_my_printer_print_wrong_colors.pdfIn PDF document text
    • http://peledopa.myartsonline.com/85726692565.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_off00010b6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6A 5444 bytes
SHA-256: f5145fd87ad370021012cea5aae2fc8275d34bbc0ffc47258432a5bcf7151ba6
font_01_sfnt_off00011dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DC0 10760 bytes
SHA-256: 116e744983752dd538a6d972d13c45bed2bfbcb1ef674e21809d61d87e1fd506
font_02_sfnt_off0001420d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1420D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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