Malicious PDF — malware analysis report

Static analysis result for SHA-256 05aae6f982938b98…

MALICIOUS

PDF

101.8 KB Created: 2021-03-14 02:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: c79849164ce4fce8cb23e3b17b90ea32 SHA-1: f9c9cf7245729ee287409f5e65f4926f74ed8e79 SHA-256: 05aae6f982938b980a79f21eb8f67b44ee57eb292a9b504b60b4432394cdc40f
156 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a credential phishing lure, impersonating the brand 'Ups'. It embeds external URIs, including a link to a redirector that ultimately points to a PDF file hosted on weebly.com, likely serving as the phishing page. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://xowozasa.weebly.com/uploads/1/3/3/9/133999953/15d12f83ef.pdf.
  • 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://jacksth.ru/strik?utm_term=explosive+stock+trading+strategies+pdf PDF link annotation
    • https://xowozasa.weebly.com/uploads/1/3/3/9/133999953/15d12f83ef.pdfIn PDF document text
    • http://fibiver.mygamesonline.org/eben_jesus_at_the_center_mp3_free_download.pdfIn PDF document text
    • http://falorilipeb.mywebcommunity.org/richard_thaler_behavioral_economics.pdfIn PDF document text
    • http://faxusigeroles.sportsontheweb.net/98654424469.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379486/normal_6008ee9d43229.pdfIn PDF document text
    • https://mutabezikubi.weebly.com/uploads/1/3/4/7/134739743/78be4ef6b8649.pdfIn PDF document text
    • http://vozobatenaw.mywebcommunity.org/xebosevifebejiwava.pdfIn PDF document text
    • http://wivaserana.mywebcommunity.org/ditepusulamagan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426819/normal_60277eb836694.pdfIn PDF document text
    • https://musekakilex.weebly.com/uploads/1/3/1/4/131406804/zedorumuririmituvil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415745/normal_6035aa5c1ef0d.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/kegovev/bts_love_yourself_answer_song_sorter.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/10861154241.pdfIn PDF document text
    • http://mojogoralil.onlinewebshop.net/application_letter_for_employment_sample.pdfIn PDF document text
    • http://lupixopuvir.onlinewebshop.net/uscis_vermont_service_center_hours.pdfIn PDF document text
    • http://nuwadolonopip.onlinewebshop.net/sum_of_infinite_geometric_series_formula.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/wexip.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/kavuvimasato.pdfIn PDF document text
    • http://wobadumiravolu.atwebpages.com/catia_v5_training_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/sesapulaxanagi.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_off00014ea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EA9 5472 bytes
SHA-256: 2320601eb85512a7e386ebba9d7979d4c7fb93d7ff4ad3102c88493ac978284e
font_01_sfnt_off00016168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16168 11624 bytes
SHA-256: 6653902f70b77a7cbaa10aaebe0753056a0c1da25043d98be2ebea2a21d8be7d

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