Malicious PDF — malware analysis report

Static analysis result for SHA-256 c263abdcc1de4801…

MALICIOUS

PDF

78.2 KB Created: 2021-03-04 06:02:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1fe7957289c5c59993369f78049cdaac SHA-1: 1914835dcede37e8c55a83ea88b2cd8aab789adf SHA-256: c263abdcc1de4801165a9ea956226705794d9b9fd8c75780bc51d0105b67f5c7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, indicating an attempt to redirect the user to a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the presence of external URIs and the high confidence scores from security tools point towards a malicious document designed to trick users into visiting a compromised website.

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://botokaw.ru/123?utm_term=what+to+ask+in+marriage+counseling PDF link annotation
    • http://idslim-italia.site/total_knee_replacement_xray_reportho1n7.pdfIn PDF document text
    • http://koponegigat.medianewsonline.com/how_to_program_a_dish_remote_to_an_emerson_tv.pdfIn PDF document text
    • https://selimubujupaso.weebly.com/uploads/1/3/4/8/134847774/wupolubugobegu.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/dapenuluketaxokugoporuxi.pdfIn PDF document text
    • https://zamovolipizutuj.weebly.com/uploads/1/3/1/0/131070940/feruk_dujimixos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414174/normal_6031ddced8205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494891/normal_601718a42ae18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403680/normal_5ffe97a1623a7.pdfIn PDF document text
    • https://jawetixadal.weebly.com/uploads/1/3/1/6/131606755/garemiwelijesopegu.pdfIn PDF document text
    • https://lepefolavexar.weebly.com/uploads/1/3/0/8/130874674/7148922.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492253/normal_60053fe2b4d36.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/rujabepifar/siteludowikoxozijikelotel.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/paxafidenenotumulize.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/75988301367.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/bunugeteme.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/99779472558.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/marshall_stockwell_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/kumupavobasuluxunuz.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_off0000f5c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C9 5288 bytes
SHA-256: ac5bbb3a4e6e7b61e2493e3f7dbfaf9e5f53099381a0999424b59c5b9eb3174a
font_01_sfnt_off000107ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107AC 10464 bytes
SHA-256: 7e1f479480dc197879b5789927efbaefd9a041b2a30a1151fd2676465a91f9af

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