Malicious PDF — malware analysis report

Static analysis result for SHA-256 724a965125d153f3…

MALICIOUS

PDF

68.1 KB Created: 2021-03-14 10:19:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b8f73c7ecd22bf8dad7e42060d8114e SHA-1: be0e443fb27d8b3ac35b9155312f2f597fd37e1f SHA-256: 724a965125d153f335874c8e123cc941f07851acdd1e6361f46b5e6b7e5c4501
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a website disguised as a search result for song chords. This is a common lure to entice users to click on malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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://vilenefex.ru/wix?keyword=you+belong+to+me+carla+bruni+ukulele+chords
    • https://menaminalopu.weebly.com/uploads/1/3/5/3/135318725/gijenumuxizur.pdf
    • https://cdn-cms.f-static.net/uploads/4484993/normal_60125f3dc1343.pdf
    • https://cdn.sqhk.co/jatizaru/hggeijO/lebara_australia_app.pdf
    • https://cdn-cms.f-static.net/uploads/4428045/normal_601d7b825bf53.pdf
    • https://voganesabif.weebly.com/uploads/1/3/1/1/131163538/zizutusasa-rafizat-satefuroruvutex-zumifu.pdf
    • https://fisadurubimu.weebly.com/uploads/1/3/1/4/131409264/9230709.pdf
    • https://static.s123-cdn-static.com/uploads/4484383/normal_5ff8544fdb494.pdf
    • https://gigufeti.weebly.com/uploads/1/3/4/6/134633464/d84ca5b7ef.pdf
    • https://cdn-cms.f-static.net/uploads/4470389/normal_602e723de6b9c.pdf
    • https://xabetidadema.weebly.com/uploads/1/3/1/3/131398123/wadudom.pdf
    • https://cdn.sqhk.co/wadusazilox/PUk3hai/spelling_game_for_2nd_grade.pdf
    • https://tajamexuzoxobug.weebly.com/uploads/1/3/1/4/131410736/ropozelapotilul.pdf
    • https://cdn.sqhk.co/tisumusef/6tlgfqw/moneygram_app_cost.pdf
    • https://cdn-cms.f-static.net/uploads/4446925/normal_60472627a440d.pdf
    • https://cdn.sqhk.co/mopomotop/ThjkukK/57323999229.pdf
    • http://vukogosapejofa.iblogger.org/small_business_daily_bookkeeping_template.pdf
    • https://cdn.sqhk.co/sogunixe/jOjiijL/drum_kits_fl_studio.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://e5baaea7-7007-41de-9367-4ebf3ed55875.filesusr.com/ugd/8e1900_197c07ddf40a46b1bd758dc98460b700.pdf?index=true
    • http://kijenor.epizy.com/automatically_forward_text_messages_android_phone.pdf
    • http://likefiradoweze.rf.gd/kuripesorizinitasegerum.pdf
    • http://jakiwokokik.epizy.com/31603801315.pdf
    • https://ef9d90ca-5811-4a1c-810e-75bcfae60121.filesusr.com/ugd/a33af7_72ebb826ca1f401883f211ce060d7dbf.pdf?index=true
    • 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_off0000cac0.bin
8587a25536959327478f2c801f19484f5dd71929537b0310c6d311efdb2e7f8f
pdf-font-stream PDF embedded font (sfnt) at offset 0xCAC0 5516 bytes
font_01_sfnt_off0000dd52.bin
8baf039bdd7d6db05a18ab8886056c6b2564bb6c34a839d20d5fcdedf5842f84
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD52 10604 bytes