Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5a7155dc00f3c9a…

MALICIOUS

PDF

82.8 KB Created: 2021-03-07 16:53:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a849db35900aa6ce80ddc8a792429d79 SHA-1: 942baad1f9affce5e27c715ad33d0358c7ad5ccc SHA-256: b5a7155dc00f3c9a185107a985ad5a1e45a0750776b1d922825f76f367a2b1eb
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The embedded URL points to a domain that is likely malicious and associated with the lure of a specific manual. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit users by directing them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://resalured.ru/wix?keyword=exergen+temporal+scanner+2000c+manual PDF link annotation
    • http://delayikapy.xyz/ios_13_developer_beta_4io25u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447434/normal_602b836a0b085.pdfIn PDF document text
    • https://cdn.sqhk.co/fumodolanes/hfvfhja/okay_good_luck_in_spanish.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477655/normal_600499a29248a.pdfIn PDF document text
    • https://cdn.sqhk.co/bijukipuj/Cidjbie/lifutelupaxiguz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464710/normal_5fdc59d153c1f.pdfIn PDF document text
    • https://cdn.sqhk.co/fagijopi/gf7jjC7/gazebaxuxugaso.pdfIn PDF document text
    • http://formverifiedbadge.com/american_big_picture_a1hhv06.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382004/normal_5ff94051dd78a.pdfIn PDF document text
    • http://azorocheat6.xyz/darkness_rises_apk_mod_hack95xbc.pdfIn PDF document text
    • https://cdn.sqhk.co/wibetaxor/jeDT2BI/5418876475.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411479/normal_5fe160101611a.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/hfjePgg/37756782404.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/busutafitufe/simple_agreement_of_sale_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/59847422732.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/connotation_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/subamutulupakefimawe.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/acrobat_reader_for_android_tablet_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/osmosis_and_tonicity_worksheet_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/casio_fx-991es_plus_scientific_calculator_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/havoc_demon_hunter_talents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/papuzepazube.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/narasimha_god_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/pilugoxuwojibabezofafizu.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/trip_planning_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/approval_form_format.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_off0001066e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066E 5552 bytes
SHA-256: ab6c21eac74f32949e687b9c775133d0d39f6f93131906af333b35c3da38a4fa
font_01_sfnt_off00011947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11947 10628 bytes
SHA-256: 71704fd79088fb7e98a1854cee5214171bd522d56e6fcfb60f3b81c70cc8a306

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