Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2e2122a7ac22b11…

MALICIOUS

PDF

157.5 KB Created: 2021-04-14 21:11:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 412b7621675071fa06fbd55efbb6a70b SHA-1: fbb717eecc3d30e7255a27f2605c33c5d0d4bedb SHA-256: b2e2122a7ac22b114ab13b35b0a98f51920da6145662d42908d0a8e7cf777947
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI pointing to a suspicious domain, which is also listed as an IOC. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and the presence of an external URL suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/strik?utm_term=what+is+definition+of+communication+plan PDF link annotation
    • https://zisibunekotif.weebly.com/uploads/1/3/4/9/134902626/9917209fb5874.pdfIn PDF document text
    • https://cdn.sqhk.co/pobopuwubox/he7hip5/world_general_knowledge_quiz_questions_and_answers_2018.pdfIn PDF document text
    • https://lepasedesefin.weebly.com/uploads/1/3/4/6/134625589/fuzefuwolepi-miman-voleninedex.pdfIn PDF document text
    • https://kikimegaxexamez.weebly.com/uploads/1/3/5/3/135392900/riwowularar.pdfIn PDF document text
    • https://cdn.sqhk.co/midijanere/BgiHyIY/sumolamanatogi.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/g5jeZhf/jogog.pdfIn PDF document text
    • https://godanikepogi.weebly.com/uploads/1/3/4/5/134509841/fbc754.pdfIn PDF document text
    • https://cdn.sqhk.co/vivutazawi/HgcV9hb/jorur.pdfIn PDF document text
    • https://rogefuza.weebly.com/uploads/1/3/4/6/134688393/sixujavux-lerag.pdfIn PDF document text
    • https://kezuvuxir.weebly.com/uploads/1/3/2/8/132814306/vagatejifosituziliz.pdfIn PDF document text
    • https://jafoxoxuxovawe.weebly.com/uploads/1/3/0/8/130813536/29d14d.pdfIn PDF document text
    • https://cdn.sqhk.co/puxezuxivas/iejdDgi/jasaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxixixixi/cZAijBl/82622544951.pdfIn PDF document text
    • https://cdn.sqhk.co/mudemodox/5nig8gg/pozujipekepoloreburanewag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/s_s_name_photo_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/faxaxos/lagu_asmara_dj_uyeshare.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/10994420589.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/47118772585.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/uk_government_climate_change_report_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/girilifawuxi/attendance_android_app_github.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00021a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21A69 5312 bytes
SHA-256: ad1e41b935f84d163cd93586274b29584aa52afb8ea7b3a3eba7d55ede9e28d3
font_01_sfnt_off00022c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22C68 11000 bytes
SHA-256: 407b4ac640ea8d2a95ddc40e3fbbaf48988cce1dca909d61327debcf57a4d520
font_02_sfnt_off00025207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25207 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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