Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67e7f31c53821c6…

MALICIOUS

PDF

132.8 KB Created: 2021-03-18 00:34:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3b55009bf0d4f5df83eac013991f8cd6 SHA-1: 81dcd5cbf08a814ac1b8a3c2408c4e596ab7ccbb SHA-256: c67e7f31c53821c6ee6aa64b254a737097be4d341eade734b0c39afbbb8771ca
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to SEO redirectors and potentially malicious PDF files, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://soxebez.ru/123?utm_term=enduring+power+of+attorney+tasmania+fact+sheet PDF link annotation
    • https://gajaxaja.weebly.com/uploads/1/3/2/7/132712369/sigek.pdfIn PDF document text
    • http://ritikutoxukor.22web.org/harry_potter_book_wikia.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/xepuvakokexulavoputege.pdfIn PDF document text
    • https://cdn.sqhk.co/potonefamuve/WrjdiiN/xaburunenubogor.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/minavatiwirewusirelapujas.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/ifibbtc/33968508536.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/fetiniramejuz.pdfIn PDF document text
    • http://xitemomide.22web.org/what_are_the_6_essential_nutrients_your_body_needs.pdfIn PDF document text
    • https://pedasivu.weebly.com/uploads/1/3/5/3/135387907/3222471.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/brookes_westshore_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/contract_template_microsoft_word.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/hemIjeL/snake_venom_timeline.pdfIn PDF document text
    • https://cdn.sqhk.co/bomumuxa/aCm5ghv/motor_sims_2_download_mac_free_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/86628483263.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/how_to_concrete_mix_design.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/50527473837.pdfIn PDF document text
    • https://s3.amazonaws.com/lepefi/kafka_metamorphosis_movie.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://48e5b1ff-25fb-49a4-826b-3ad3f3a15688.filesusr.com/ugd/0d632a_7904b4f2ad94432caf6da0f119350200.pdf?index=trueIn PDF document text
    • http://givemuzod.epizy.com/financial_statement_analysis_journal_articles.pdfIn PDF document text
    • https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_584d09169b29491aad2509b5c6b0bb90.pdf?index=trueIn PDF document text
    • https://18b09f4e-de4d-4c1b-9fe6-be55c63b1c00.filesusr.com/ugd/cd81e9_cc2916f5c2964e42919c9579ff3f57be.pdf?index=trueIn PDF document text
    • https://901b9152-9067-49c5-8541-bb90c1a77dfa.filesusr.com/ugd/5d84e8_b6cd3e382d28467aa84a1377991695f5.pdf?index=trueIn PDF document text
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_b711df85bd514c33bff9ad994428f02c.pdf?index=trueIn 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_off0001cc93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CC93 5688 bytes
SHA-256: 44c2c7aa1c469530e90e458cb2a64a75d27c2f50276d931d8dc55a5985557291
font_01_sfnt_off0001dfe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DFE5 10648 bytes
SHA-256: 18bd89a3e3ae81abb56672e1cd71b0031767457382f21ac0e2b19ce94c1da809