Malicious PDF — malware analysis report

Static analysis result for SHA-256 15e9408e06554763…

MALICIOUS

PDF

80.7 KB Created: 2021-02-10 04:12:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d883b05b82967bf592ea7fe566e0fe1e SHA-1: 0bb8d2d6bde68a0be6a06ba31d614a9219fdfbed SHA-256: 15e9408e0655476312b956f40a03bdd9a079220281a3580e013484754bd2f5e3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to external, potentially harmful, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/aws?utm_term=9mm+compressed+fibre+cement+sheet+sizes PDF link annotation
    • http://merishwheelrecords.com/pefozeturipeleroduxolonia8h6j.pdfIn PDF document text
    • https://vimasavugaf.weebly.com/uploads/1/3/4/5/134587410/6648424.pdfIn PDF document text
    • http://remontlegko.info/download_blumberg_x120_formje30k.pdfIn PDF document text
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/xegiz-wopetivimulivel-nuvilaf.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/gejghdF/52194196546.pdfIn PDF document text
    • http://smartbright.club/beowulf_graphic_novel_sparknotesby02i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370540/normal_601a2fc43c3a3.pdfIn PDF document text
    • https://zinuwikisabarek.weebly.com/uploads/1/3/4/6/134679236/lepotes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377905/normal_6015d86da0180.pdfIn PDF document text
    • https://penotogales.weebly.com/uploads/1/3/1/4/131438478/d58066.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/490185497995z550.pdfIn PDF document text
    • http://itali-big.space/disney_pixar_up_theme_piano_musescore55c86.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wabalegawamiraj.rf.gd/velopebigudova.pdfIn PDF document text
    • http://rozipiliwune.epizy.com/wugabitegisowu.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/color_blindness_test_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/lujiwisavegifananorekaku.pdfIn PDF document text
    • http://xifonefoje.epizy.com/83733436523.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/apresolina_50_mg_bula.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/bobinage_transformateur_de_tension.pdfIn PDF document text
    • http://zemadepa.rf.gd/certificate_of_conformity_template_australia.pdfIn PDF document text
    • http://tefinavi.epizy.com/kogef.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_off0000ff18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF18 5404 bytes
SHA-256: 45eca76e0528531fcea36e3266e1a91fbc5e48151c0b99721027f88831dcd7df
font_01_sfnt_off00011151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11151 10476 bytes
SHA-256: 5178d0556b7268ceea96adcb1620e27cb57a3e8b4401307762f419df560112c7

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