Malicious PDF — malware analysis report

Static analysis result for SHA-256 89df2e7c2378ad20…

MALICIOUS

PDF

82.1 KB Created: 2021-03-17 09:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 7feee0c907cfc1f64cf9c990f20bcac9 SHA-1: 6501e2268e0938a80f2655a9007a810e5d29586c SHA-256: 89df2e7c2378ad209f8ae912402609a51a805a51d473c190087cd645d8e28893
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://gimoguvi.ru/award?keyword=astrology+books+online+pdf', suggesting a phishing or social engineering lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://gimoguvi.ru/award?keyword=astrology+books+online+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4491432/normal_5fcede8cc18a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471682/normal_5fe691a7d5a3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483354/normal_6022b75f22eb9.pdfIn PDF document text
    • http://copyrightshelpcenter.com/52122026758kgwj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490542/normal_5fcd79cfa375a.pdfIn PDF document text
    • http://smartcreditus.info/baixar_driver_hp_deskjet_f2430qo5da.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/WiaJhaI/rojogelugakitewulipu.pdfIn PDF document text
    • http://badgesverified.com/essentials_of_geographic_information_systems_version_2.16otz8.pdfIn PDF document text
    • http://itclick.pro/agama_islam_di_indonesiacuza9.pdfIn PDF document text
    • http://buybritishcat.com/alexander_the_great_accomplishments_timeline6xv8y.pdfIn PDF document text
    • https://cdn.sqhk.co/redexisa/evrtl59/hydronic_radiant_floor_heating_diy.pdfIn PDF document text
    • https://cdn.sqhk.co/zolulesar/ddsiajd/97940364913.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427104/normal_5ff601294ccc8.pdfIn PDF document text
    • https://cdn.sqhk.co/wepenujofow/fiaghrU/68047654508.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368226/normal_5ff3ef23cf7a5.pdfIn PDF document text
    • https://cdn.sqhk.co/gasariba/bSwibhj/202669494.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409000/normal_5fc76322e9a01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461498/normal_5ff939d3b3d63.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/xonaxevetaf/wifi_calling_app_android_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/23190163871.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/designer_portfolio_site_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/automation_production_systems_and_computer-integrated_manufacturing_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/90676818362.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/koramexuxefopijolurewezul.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/how_to_pair_bose_soundbar_remote_with_tv.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_off00010372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10372 5296 bytes
SHA-256: 4829a88e9db1868e8fa0e89b9186079b8a31ec5072add051cc42c916de38c9a5
font_01_sfnt_off0001158e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158E 11076 bytes
SHA-256: 759147359c7a74a390084889d7e79b4a0227b3398f1995c6c14b1bd19b597478

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