Malicious PDF — malware analysis report

Static analysis result for SHA-256 141c3938209056f8…

MALICIOUS

PDF

70.8 KB Created: 2021-02-15 15:30:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 1756733c054411d7b3024de219a5453b SHA-1: 836ba154407dfbb710ee272dd4c4faa1c1c32669 SHA-256: 141c3938209056f81283b7ae2e0831a3a7ac4c3cb1813eba2c1e5da2c43522bb
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an embedded URI pointing to 'druttle.ru' strongly suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI are sufficient indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=mass+of+joy+and+peace+alleluia+pdf PDF link annotation
    • http://vezdesami.ru/1744245205461s93.pdfIn PDF document text
    • http://particulier-societegenerale.xyz/wapavusamaxawesigane5lsqy.pdfIn PDF document text
    • http://vvd.bar/dialogisme_et_polyphonied1d6a.pdfIn PDF document text
    • http://xtina.online/wogamoxezexovokodijek0k86d.pdfIn PDF document text
    • http://i12tws.website/72835254690m35mp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474722/normal_5ffa5bae12c13.pdfIn PDF document text
    • http://maxawasoreveta.iblogger.org/xifuwamuneda.pdfIn PDF document text
    • http://edaruzal.xyz/gokazipiwamopulinixeguva5k2r.pdfIn PDF document text
    • http://mastericy-chistoty.ru/xovakez9yx1w.pdfIn PDF document text
    • http://awpmode.com/577436621587k9oc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://lelexuxifu.epizy.com/clothes_matching_esl_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/acute_appendicitis_guidelines_uk.pdfIn PDF document text
    • http://dawifugoxumevej.rf.gd/acts_chapter_13_bible_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/32615231991.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/77420719645.pdfIn PDF document text
    • http://jejivosijej.rf.gd/73014179746.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/52219545664.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D4 5036 bytes
SHA-256: 798dc24d38d918c0586d4ff3b6d94c6c8a96de7818c4f557f4fdfd569504b1a6
font_01_sfnt_off0000db18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB18 10608 bytes
SHA-256: 52f19439141fe365c774d835a1d93f4094ea3f557f0bcab660cc62baac69931b
font_02_sfnt_off0000ff82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF82 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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