Malicious PDF — malware analysis report

Static analysis result for SHA-256 1622e9071141d1fe…

MALICIOUS

PDF

70.8 KB Created: 2021-01-26 07:56:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d42bb27ee9bbbe9f6486ecf3c4ead85f SHA-1: 5d0c4d327e433d22ebc92a0ac33855b9f89a8c57 SHA-256: 1622e9071141d1fea6be70dede37a7a30d97cc571de210249eef5f6547a70dec
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a harmful site. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and the presence of a malicious URL point towards a phishing or malware delivery attempt.

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
  • 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://gettraff.ru/wb?keyword=does%20detox%20water%20reduce%20belly%20fat In PDF document text
    • https://gonuvogizup.weebly.com/uploads/1/3/1/8/131857562/6421274.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383138/normal_5fc6c680315ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485578/normal_6005d93655e1d.pdfIn PDF document text
    • http://wgathering.org/43360665193blkx5.pdfIn PDF document text
    • https://sevafigetof.weebly.com/uploads/1/3/4/9/134902911/41229f5a7c25b.pdfIn PDF document text
    • http://copyrightshelpcenter.com/43481668237wegoe.pdfIn PDF document text
    • http://scandisvet.ru/doomsday_caught_on_camera_trailerfrxap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bajipodi.epizy.com/vegekopif.pdfIn PDF document text
    • http://fadajoja.epizy.com/lutonazokuzon.pdfIn PDF document text
    • https://s3.amazonaws.com/samopakamefap/87651156250.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/buzapukalexemu.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/old_bollywood_video_songs_720p_mkv.pdfIn PDF document text
    • http://zizakipu.epizy.com/zuwukidijosokuwulit.pdfIn PDF document text
    • http://fudewalazakukug.epizy.com/jejenuratilerosodumugaw.pdfIn PDF document text
    • http://sodarag.epizy.com/39435737657.pdfIn PDF document text
    • http://lafeseg.rf.gd/pakaxolejifovedobot.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/performance_appraisal_l_g.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_off0000d7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D7 5416 bytes
SHA-256: a4f631758b034ccdbe9a0ab9ddd0ac82589c6837d9134d63bced8b171ced769c
font_01_sfnt_off0000ea76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA76 10500 bytes
SHA-256: b8959a595c469742a267aede0e55c223760b567f6908e8c1b38541f56dc1c569

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