Malicious PDF — malware analysis report

Static analysis result for SHA-256 53617554732f94d7…

MALICIOUS

PDF

75.7 KB Created: 2021-06-08 06:13:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dfada80f3349f52f25a8aecc93eca55 SHA-1: 6c951c6bb0fe4a5d90ae444b2dff8da0e31483cd SHA-256: 53617554732f94d724cf27ca1eaad9462c96e538e1344f40936d127d2b277fe8
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO link farms and phishing lures, with one prominent URL pointing to 'allytemp.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://allytemp.ru/pbw?utm_term=manejo+de+falla+cardiaca+aguda+pdf
    • https://static.s123-cdn-static.com/uploads/4443823/normal_5ff3500e65e51.pdf
    • https://wixofixun.weebly.com/uploads/1/3/1/3/131379115/1323747.pdf
    • https://vutakajar.weebly.com/uploads/1/3/4/8/134896426/1619526.pdf
    • https://regutipedazuvi.weebly.com/uploads/1/3/1/0/131071249/4125233.pdf
    • https://static.s123-cdn-static.com/uploads/4402294/normal_5ffc21940fcd2.pdf
    • https://bibasalerudo.weebly.com/uploads/1/3/1/8/131857029/2827688.pdf
    • https://dekupepevimozis.weebly.com/uploads/1/3/0/7/130738652/xezixipusadowukuji.pdf
    • https://nuvarimo.weebly.com/uploads/1/3/1/3/131378817/wugodifo.pdf
    • https://cdn-cms.f-static.net/uploads/4419628/normal_60285876d7d80.pdf
    • https://bupekotarox.weebly.com/uploads/1/3/0/7/130739944/raxutazajimox.pdf
    • https://cdn-cms.f-static.net/uploads/4486197/normal_6069d415f323b.pdf
    • https://tujowijide.weebly.com/uploads/1/3/0/9/130969571/4d6b9581.pdf
    • https://dogixosewe.weebly.com/uploads/1/3/4/6/134633635/bfe06faa5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4c37d4b8-a899-4a7f-9d2c-4db3c2e23cea/wevozoxezewomowawasolovad.pdf
    • https://uploads.strikinglycdn.com/files/5b6f1c40-0a97-447c-8f01-354f24fd0d5f/79081212751.pdf
    • https://uploads.strikinglycdn.com/files/daae22b7-5055-42fe-9b56-a0fd7ba09b08/perzische_koning_in_de_5e_eeuw_voor_christus_cody.pdf
    • http://tosuvop.pbworks.com/f/5854921319.pdf
    • http://wijozuzapusa.pbworks.com/f/what_is_the_latest_news_on_cnn_today.pdf
    • http://joxupakager.pbworks.com/f/how_to_study_for_ct_permit_test.pdf
    • http://sovafiben.pbworks.com/w/file/fetch/144778626/sun_joe_pressure_washer_just_stopped_working.pdf
    • http://goxuluk.pbworks.com/f/telefon_zil_sesi_mp3_indir_dur.pdf
    • http://lopofemusun.pbworks.com/w/file/fetch/144520842/ejemplo_de_un_texto_cientifico_especializado.pdf
    • http://dekokos.pbworks.com/f/80883574407.pdf
    • http://gonumutat.pbworks.com/f/human_physiology_silverthorn_6th_edition.pdf
    • https://uploads.strikinglycdn.com/files/d2627f87-db08-490a-800f-cedb0570b5d5/23092451471.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e602.bin
1c0bc7ba1a2de485f1f9a753b7639c5ef0e602d5c250cc078e0f1fc2fbae4d23		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE602 5224 bytes
font_01_sfnt_off0000f7ee.bin
084d2a87046d0f8f8ebbe454de8971b7f3f1ce24538e920560810b38655c369b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EE 12108 bytes

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