Malicious PDF — malware analysis report

Static analysis result for SHA-256 9397dfebceb09a83…

MALICIOUS

PDF

74.4 KB Created: 2021-04-04 15:26:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0c8abef913e20b10343ce4d804cbcfeb SHA-1: 211b87762c14e2eb4c9b00dbd2cc648e5dc6260e SHA-256: 9397dfebceb09a83773b5ac39a8c089df135e2e8bdf03863c784c6b06b7389d7
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it's a phishing lure, specifically using an image related to 'ipad mini 2 screen repair near me' to entice users. It redirects to the URL https://druttle.ru/strik?utm_term=ipad+mini+2+screen+repair+near+me, which is flagged as a redirector. ClamAV also detected this file as Pdf.Phishing.Trojan. The presence of embedded JavaScript, though not fully detailed, suggests potential for further malicious actions like downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?utm_term=ipad+mini+2+screen+repair+near+me PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470685/normal_60054d84adebd.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/jjgcjiX/bluestacks_hd_app_player.pdfIn PDF document text
    • https://jitavemalidev.weebly.com/uploads/1/3/1/8/131871699/5366471.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463009/normal_5ff757b771fda.pdfIn PDF document text
    • https://pixiguva.weebly.com/uploads/1/3/2/6/132681827/9955110.pdfIn PDF document text
    • https://cdn.sqhk.co/falupuvevore/ijiesia/bubble_shooter_pro_apkpure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401518/normal_60643d3daccda.pdfIn PDF document text
    • https://cdn.sqhk.co/kebokeregim/jgejiii/45173103824.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421464/normal_5fcfa0a7930d3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421637/normal_5fcd929129afe.pdfIn PDF document text
    • https://cdn.sqhk.co/xiponamoribo/FsXhfhc/50422809633.pdfIn PDF document text
    • https://nupezodebugu.weebly.com/uploads/1/3/2/3/132302780/298002ad702.pdfIn PDF document text
    • https://larekupexog.weebly.com/uploads/1/3/4/8/134884129/walifef_mazemaxemidev_jusezirawu.pdfIn PDF document text
    • https://dovomarolod.weebly.com/uploads/1/3/0/9/130969455/pesavaxal.pdfIn PDF document text
    • https://kaxozugusejerob.weebly.com/uploads/1/3/1/4/131452826/a1c78af0.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/dupula/58946334958.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/spreadsheet_php_scope.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/myers_briggs_test_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/cement_brick_plant_project_report.pdfIn PDF document text
    • https://s3.amazonaws.com/legesiliv/how_to_download_map_on_google_map_app.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_off0000e5b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B7 5256 bytes
SHA-256: 9571d6f178c5bc85fda9fd82c18ad5c90615928052d633f0e5911dd326283c17
font_01_sfnt_off0000f781.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF781 10828 bytes
SHA-256: 8550921e0dd63912b83adb03c3fecc23f6dde5b93248a1164a9df1f556e1d71e

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