Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf456528c27dc42…

MALICIOUS

PDF

75.9 KB Created: 2021-03-09 22:07:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e698158c37c009641e15387fe7827032 SHA-1: 32cb8519f8d3219234562b308a3a8388acbd12df SHA-256: faf456528c27dc42e2b22da507a725d95bdb98242cf89724aaabc8a1960773d4
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to suspicious domains and are likely part of a link farm designed to host malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing. While no scripts were directly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to malicious sites, potentially for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jumiwimov.ru/strik?utm_term=information+technology+degree+salary PDF link annotation
    • http://heleogose.online/49920628985hx39y.pdfIn PDF document text
    • https://noxawopaxuroge.weebly.com/uploads/1/3/1/3/131398379/fabikipis_suxidagewel_rezazumufa_muwovamefolosu.pdfIn PDF document text
    • https://tezilejesitox.weebly.com/uploads/1/3/1/1/131163634/a2c84c27c77da4.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/65185322963gs55u.pdfIn PDF document text
    • http://bonifacy.site/what_is_multilevel_inheritance_explain_with_examplebjlu2.pdfIn PDF document text
    • http://suvarelis.22web.org/k_g_f_chapter_2.pdfIn PDF document text
    • http://f13x.xyz/10_mb_car_racing_game_apka6cbj.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/free_business_card_template_for_massage_therapist56aaz.pdfIn PDF document text
    • https://bomejafir.weebly.com/uploads/1/3/4/7/134725936/3200528.pdfIn PDF document text
    • https://liwotagavujid.weebly.com/uploads/1/3/5/9/135961529/zefabidozababikawoji.pdfIn PDF document text
    • http://bestplacefor.rest/xatogufatewiwedoja98v.pdfIn PDF document text
    • https://bivapere.weebly.com/uploads/1/3/4/6/134689139/8282755.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/wopari/dezol.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/nawolusisujime.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/harry_potter_and_the_prisoner_of_azkaban_1st_edition_paperback.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/99537884657.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/98548582290.pdfIn PDF document text
    • http://misukejijixuke.epizy.com/animal_quizzes_with_answers.pdfIn PDF document text
    • http://dowiwofijixawo.rf.gd/bozomasekipilevakiworar.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/teacher_evaluation_form.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/93209070773.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_off0000ebec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBEC 5472 bytes
SHA-256: 6083ab7e4e8d26033ce1225a26506919a7243cfec623a1585a8d05dda41e3e3e
font_01_sfnt_off0000fe68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE68 10456 bytes
SHA-256: f2a33f48948450bacb29821cffe54a2ff9a2fbe2c3a337a57fb78a86d2c50705

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