Malicious PDF — malware analysis report

Static analysis result for SHA-256 f06e85a38ccc7e2a…

MALICIOUS

PDF

81.9 KB Created: 2021-02-26 06:32:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 578e4475fc40fba2476df0a0100e2593 SHA-1: 853e2f11e99f26128d142d96323154704a58faa4 SHA-256: f06e85a38ccc7e2a9d5e670cb785be371c7b1a4f7197bffe2391823edc9aa2c0
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing attempt. The 'SE_BRAND_CREDENTIAL_PHISH' heuristic confirms this, identifying an impersonation of Amazon and a link to a redirector. The embedded URLs and the nature of the heuristics strongly suggest the document is designed to trick users into submitting credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://muruvarulem.weebly.com/uploads/1/3/1/4/131406835/94b524f5e.pdf.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/award?keyword=do+lara+jean+and+peter+end+up+together+in+the+last+book PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387712/normal_5fcd8bb0ec9ff.pdfIn PDF document text
    • https://cdn.sqhk.co/kawaniroti/fhaPhaz/akinator_full_version_apk_download.pdfIn PDF document text
    • http://com-connexion.xyz/tabixuvuwgb1px.pdfIn PDF document text
    • http://shop-onlain.fun/jirutejonadutaauyt6.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/lgfijhk/new_york_mysteries_2_free_to_play.pdfIn PDF document text
    • https://muruvarulem.weebly.com/uploads/1/3/1/4/131406835/94b524f5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478946/normal_60209b48cdea8.pdfIn PDF document text
    • https://xolufoxe.weebly.com/uploads/1/3/4/5/134501271/2610008.pdfIn PDF document text
    • http://help-feedback-amzn6.xyz/dowalatorasarexa9m4ni.pdfIn PDF document text
    • https://rogewakaz.weebly.com/uploads/1/3/2/8/132815912/9be6c.pdfIn PDF document text
    • http://rcasino.info/the_bobo_doll_experiment_is_an_example_of_what_kind_of_learningtr967.pdfIn PDF document text
    • http://lnstagramlivesupportcenter.com/download_dancing_line_2_modhhnp5.pdfIn PDF document text
    • http://money-team.site/apache.nms.activemq.net_core_examplelwiu3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448556/normal_601a9ada2a8a8.pdfIn PDF document text
    • http://wiinorama.space/past_tense_worksheet_for_grade_3sw6wp.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/rebesudanolo/what_are_the_different_types_of_patents.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/34258377270.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/76559603782.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_off0000fe22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE22 5500 bytes
SHA-256: 1d1cab76a803c0b9b721f9b0f75580295c713c68550990da8efe01c2ca1638e1
font_01_sfnt_off000110cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110CD 11560 bytes
SHA-256: b38f9290bebbdedff83ff93988e03a923bf8571c267490155ffa2ded1eaa221b

Open this report in the interactive analyzer, or submit your own file for analysis.