Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1596746f99a95d7…

MALICIOUS

PDF

92.3 KB Created: 2021-03-01 00:32:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 93239ca6c7dfbff8c988b2f058fb8a56 SHA-1: 76cead9be02b8bbd0fa2ebbb05c0c297d3bbfa3c SHA-256: f1596746f99a95d7c026492c3e5ba5950e351dda55defabd4167825833333f95
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, likely intended to trick the user into visiting a malicious site. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the presence of external URIs and the nature of the heuristics strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://baarspo.ru/123?utm_term=minecraft+survival+island+seeds+bedrock PDF link annotation
    • http://wuzagabi.22web.org/contract_agreement_template_between_two_parties.pdfIn PDF document text
    • http://varnisvakq.ru/41939829976lushy.pdfIn PDF document text
    • http://sibefumunefeke.iblogger.org/principais_livros_de_historia_do_brasil.pdfIn PDF document text
    • http://helpcreditscore.info/filubedixefidexapofobogoznzkvy.pdfIn PDF document text
    • http://dasuwupozu.22web.org/waboka.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/vososasoxumete/carrera_performance_coaching.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/diveva.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/backup_exec_licensing_guide_20._5.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/judgment_ps4_girlfriend_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/14432790256.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/18307246036.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/wixegubimewuvaxusotexuw.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/how_much_mercedes_service_b_cost.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_off00012ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA3 5284 bytes
SHA-256: 8cfbf548f861ff4df96851b66993d97dcc3cfe1b3b57f8fd403f84415139ec85
font_01_sfnt_off00013ebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EBD 10944 bytes
SHA-256: 8179a6480cef3a240acb9ba82dd25d50a7ac449ca72b13fa4963cc574373cd17

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