Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fe75096f08f5abd…

MALICIOUS

PDF

66.9 KB Created: 2021-02-23 08:01:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: bda4f23191a7f6eab1e034f6d1aa3176 SHA-1: 31e8bbafe74456188474a406ae37f36c67a5a031 SHA-256: 1fe75096f08f5abddd68dafb87f2dd3ffc38ecb78f123bb402ed9a837654e276
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are disguised as legitimate content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/123?utm_term=how+to+turn+off+hotpoint+gas+oven PDF link annotation
    • http://doucheop.xyz/todoxedogeseduvekaluvogjwb8h.pdfIn PDF document text
    • https://zemojedi.weebly.com/uploads/1/3/5/3/135333580/9753993.pdfIn PDF document text
    • https://dibekojiworibo.weebly.com/uploads/1/3/1/6/131637919/rutagup-zejomigivax-robomajaxamoke.pdfIn PDF document text
    • http://atlas-copco.su/magic_chef_electric_pressure_cooker_manualnn7vi.pdfIn PDF document text
    • https://muluxebaxomoj.weebly.com/uploads/1/3/5/4/135401331/wepedijazitilan.pdfIn PDF document text
    • http://taygerr.com/13282497282tkdv8.pdfIn PDF document text
    • http://item-get.top/badmash_dil_ringtone_freejv5sb.pdfIn PDF document text
    • https://dolunejasuvufa.weebly.com/uploads/1/3/0/7/130776008/8634064.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/lokijuronig/coolie_no_1_movie_bhojpuri.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/nudebadulagewawebavenoboj.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/capitec_bursary_application_form_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/binomial_distribution_table_edexcel.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/ajay_atul_marathi_songs_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/93698623274.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/famuxokiwadosovopad.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/nikon_35mm_1.8_fx_vs_sigma_35mm_1.4_art.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/chita_chola_song_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/letedinem.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/kutafemuzetedutoke.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_off0000c977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC977 5244 bytes
SHA-256: 4dd7737de7cf0ffd9fb5e058fddd88f90648220346a2a0bf0ade3bc99be04904
font_01_sfnt_off0000db65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB65 10236 bytes
SHA-256: 9527185ce1ea12513003a947204171c83841eaecc640d888634ada9032c33bb2

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