Malicious PDF — malware analysis report

Static analysis result for SHA-256 379e4b674e41f7fd…

MALICIOUS

PDF

80.6 KB Created: 2021-04-29 11:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3c0f0a9e322a14657c518573f2505a8c SHA-1: 5e02d48924b78f9ed44c141769c34709873fc729 SHA-256: 379e4b674e41f7fdba11de3937f81fb7390af41f164b1a900ba84d383db30c4b
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent link pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious content or download further payloads.

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://xezojetit.ru/strik?utm_term=rules+for+periods+and+quotation+marks PDF link annotation
    • https://xakowinowuga.weebly.com/uploads/1/3/0/8/130814397/3118082.pdfIn PDF document text
    • https://lariwajiko.weebly.com/uploads/1/3/4/3/134316624/devejabinoridof.pdfIn PDF document text
    • https://duloduwo.weebly.com/uploads/1/3/4/8/134850843/9121512.pdfIn PDF document text
    • https://rurasaza.weebly.com/uploads/1/3/4/8/134869927/9fd8bf6e6600ec.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/kelukakeb/whatsapp_plus_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/free_award_certificate_template_psd.pdfIn PDF document text
    • https://fb79ad55-22b5-4823-9538-35c71bbbd514.filesusr.com/ugd/ea423f_68fa37f3ae1f4c848b19d518c5fa06f5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/mebokut.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/95825508160.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/a_suitable_boy_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/types_of_brittle_deformation.pdfIn PDF document text
    • https://c07b3cb0-7d4a-4e65-9c62-eb3bd0ce3b6b.filesusr.com/ugd/7560d5_3a215a9eaa684365a783caec7688b16c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bejeseja/emulator_games_pokemon.pdfIn PDF document text
    • https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_cf842a94ddb54bf99100c585a921f98a.pdf?index=trueIn PDF document text
    • https://a2fe464c-28d1-4db8-bb2d-552ad9bc2f4d.filesusr.com/ugd/941bb1_abd1a428004c42f78acecb547cb5cf07.pdf?index=trueIn PDF document text
    • https://dbb1fad9-9c05-458f-9e32-bc0b7f65d7ec.filesusr.com/ugd/451461_dfb5265d29394e4c95640423e5aadd74.pdf?index=trueIn PDF document text
    • https://18cceff7-6d50-42ec-9d85-67184b61345e.filesusr.com/ugd/8c2e83_eaf05b509d8a49e68e07195c4df257fc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pujirageg/composition_and_inverses_of_functions_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/ramidasimagidemisajifer.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF3 5384 bytes
SHA-256: bb3e9698fcf172fea7502c6bebae84896b590c115f7ad737bef29ca1f15721f2
font_01_sfnt_off00010e35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E35 10948 bytes
SHA-256: c01a39dc5109acbfeca68d12c0d00b96337e9c5d4de0bc5abd1c3f70a8d51e23

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