Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea9205ebcb0ce0a9…

MALICIOUS

PDF

72.3 KB Created: 2021-02-14 12:18:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5ff589d77aa51b4e54b2d8cf483364a7 SHA-1: 23480fbf0cda9650e9ed7a7487b5d643a897403f SHA-256: ea9205ebcb0ce0a93ced479d50f69e7efcb437e0e50927304ed86afcd5baeac6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://yafferge.ru/aws?utm_term=voriconazole+dose+modification+guideline'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/aws?utm_term=voriconazole+dose+modification+guideline In PDF document text
    • https://wesarifalonaba.weebly.com/uploads/1/3/5/9/135961423/ruzeweg_mewifuruju.pdfIn PDF document text
    • https://retizobokeli.weebly.com/uploads/1/3/1/0/131070240/gegumogu.pdfIn PDF document text
    • https://tewukowil.weebly.com/uploads/1/3/2/7/132741555/muxifireluf.pdfIn PDF document text
    • http://repair-telefonov.ru/chinese_love_story_song_videopm656.pdfIn PDF document text
    • https://buvonumonub.weebly.com/uploads/1/3/5/3/135304713/8f331e9ec215.pdfIn PDF document text
    • http://znakomstva69.space/adf._ly_app_freexglbd.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/zesotat/kilarusobokowuruw.pdfIn PDF document text
    • http://zuniguvip.epizy.com/dell_p2418d_user_guide.pdfIn PDF document text
    • http://luzawuwu.epizy.com/a4_architecture_portfolio_template.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/zoxabevudebamepew.pdfIn PDF document text
    • http://zoxutuperovizo.epizy.com/27022817712.pdfIn PDF document text
    • http://biwovake.rf.gd/diabetes_treatment_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/buporizoseg.pdfIn PDF document text
    • http://nufitexevav.rf.gd/98895000432.pdfIn PDF document text
    • http://vateden.epizy.com/73075412589.pdfIn PDF document text
    • http://sedunadilame.rf.gd/garegudezoluguzagemi.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/auditions_vancouver_actors_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_off0000dc31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC31 5356 bytes
SHA-256: b42c1353ec009df46cc533ecb0218ae4ce52750ff90c6df3c14154cf17088460
font_01_sfnt_off0000ee5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5E 11108 bytes
SHA-256: f6d0225d7d90a530a24367ac807f1bd32256562215fa7e8f858fd0a6c9b19058

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