Malicious PDF — malware analysis report

Static analysis result for SHA-256 a196730deb3b91c8…

MALICIOUS

PDF

84.8 KB Created: 2021-03-06 20:33:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3e2f76a93a07c03433fe6f0b4eeba66a SHA-1: 8679609994b110d301e157873309a6c8a49870eb SHA-256: a196730deb3b91c8338763fabd4fcc58427354d3622caa206c9929cb81096f33
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, with one specifically targeting 'ad posting jobs' keywords, suggesting a phishing or scam lure. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document designed to deceive users, likely through a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://vilenefex.ru/wix?keyword=ad+posting+jobs+means PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445337/normal_5fd98ec84f0cf.pdfIn PDF document text
    • http://foxaxasako.22web.org/70518777796.pdfIn PDF document text
    • http://madusotiju.22web.org/finding_domain_algebraically_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457570/normal_60362df68f887.pdfIn PDF document text
    • http://lavawogufiwilor.iblogger.org/excellent_definition_in_spanish_translate.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/84636871368.pdfIn PDF document text
    • http://zipafaxelati.sportsontheweb.net/jejupewazofakawozo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417216/normal_5fee94033ac6a.pdfIn PDF document text
    • http://gazajujana.mygamesonline.org/will_roku_work_with_alexa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tugoxejemikoze.epizy.com/xijove.pdfIn PDF document text
    • https://6593eeda-10fe-4128-810f-cbbc79f0a4f8.filesusr.com/ugd/c0a4bf_c772c58e22b34c83bc86355f579da83e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/sikusumimi.pdfIn PDF document text
    • https://d03ec42c-8b93-48d3-a61e-9aee396c0db4.filesusr.com/ugd/1e557c_674b76b404c4435791f89b9c1b745b37.pdf?index=trueIn PDF document text
    • http://monigadukuze.rf.gd/89601388938.pdfIn PDF document text
    • http://dudorotedebapoj.epizy.com/98232240647.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/bardaasht_movie_song_bestwap.pdfIn PDF document text
    • https://41d9b059-0b17-466b-96e6-f31a3f3e9b19.filesusr.com/ugd/f1ead9_caf17f519bc2423c9d4ae60b791357ae.pdf?index=trueIn PDF document text
    • http://rexefobixavater.myartsonline.com/nowudifuwemeno.pdfIn PDF document text
    • https://c06d174a-caca-4ab2-b5a0-4525cd3135d4.filesusr.com/ugd/856cea_79daa593f5cf413d99bbac0e558a98fe.pdf?index=trueIn PDF document text
    • http://poravilotizeve.epizy.com/anomalias_cromosomicas_numericas_y_estructurales.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/36190640426.pdfIn PDF document text
    • http://tajajal.rf.gd/sufebasazozuvalinaxexij.pdfIn PDF document text
    • http://tirisesu.onlinewebshop.net/tree_of_life_back_tattoo_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/background_image_for_website.pdfIn PDF document text
    • https://s3.amazonaws.com/gitipelut/avonte_maddox_eagles_injury_report.pdfIn PDF document text
    • http://gisipusizen.rf.gd/wow_addon_bartender4_guide.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_off00010de9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE9 5356 bytes
SHA-256: 4b81fb0535414b42bb8e7df3bd351318e0b4e7e5b4c118a0473a2944b5c985fe
font_01_sfnt_off0001200a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200A 10980 bytes
SHA-256: 4dc39288058e827e31e70cfe56d1e3381d5e752668dcaa2ca62587cfe5e9e215

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