Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b67e1fa4e1f678…

MALICIOUS

PDF

87.5 KB Created: 2021-03-29 12:36:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bfd7c7069e9fa7bc7d64ae66b9ec29ca SHA-1: 3a8464b119c0b75600dc567850ace9b2db5190ed SHA-256: 06b67e1fa4e1f678a5bdaa281d2ae79376d68721075f6db69ad8173316777f98
186 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to domains associated with SEO spam and link farming. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The document's structure and embedded URLs suggest it's designed to redirect users to potentially malicious websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/award?keyword=bromatologia+de+los+alimentos+libros+pdf PDF link annotation
    • https://cdn.sqhk.co/kufagilan/fgjhchj/tiny_dungeon_2e_download_free.pdfIn PDF document text
    • http://50offit.pro/69965933369820np.pdfIn PDF document text
    • https://cdn.sqhk.co/vorebilifi/hhhMicK/69714072652.pdfIn PDF document text
    • http://tokigarodam.22web.org/craftsman_13.5_hp_riding_mower_42.pdfIn PDF document text
    • http://wide-mean.top/swami_sarvagananda_free_mp3_downloadribj9.pdfIn PDF document text
    • http://max-lifting.store/lake_superior_fishing_report_2018lckd7.pdfIn PDF document text
    • https://cdn.sqhk.co/sejixikerut/jbWibq1/komiguzosolagokenirofav.pdfIn PDF document text
    • http://podcard2020.site/ford_tractor_repair_shops_near_melfv6t.pdfIn PDF document text
    • http://handler-autoscout24.com/konibosevovozonubot07kb.pdfIn PDF document text
    • http://samiter.22web.org/90964106795.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa4ed448-768a-441d-be01-cd9bee0d9a94/viduzukazo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30acb378-ea21-4885-ba0f-6249811748ad/is_hp_and_the_cursed_child_going_to_be_a_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40c2ae3b-ee77-477c-a3f2-1237955a61fa/is_there_any_free_movie_apps_for_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c29b7d62-14f5-4c85-ad02-a5b91978d647/50138985933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a43b3851-6bb4-48fe-80f4-69143d52f366/58316299266.pdfIn PDF document text
    • https://a3720f92-bdaa-4449-a3ff-14f36884d2d5.filesusr.com/ugd/afadc3_49ff92e3013c4d8092cd574cac46ea5b.pdf?index=trueIn PDF document text
    • https://76df98a8-3e94-4eee-a6f5-23e1de06049b.filesusr.com/ugd/54c74c_072b310076ce45f190bbed6f42619b0d.pdf?index=trueIn PDF document text
    • http://getojigukas.epizy.com/cdn_cloudflare_jspdf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b61ecf81-7a99-4e6a-9c2e-a3c2c9f7221b/vazibokubetijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00e64d3a-3f8f-4e35-85ac-7ea9b13726ac/unlock_sennheiser_ew100_g3_receiver.pdfIn PDF document text
    • https://0029a690-d003-4268-bdc7-e74daa5a0415.filesusr.com/ugd/a4b355_2c9bcbad55e1465a92eac30469565530.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfb149a2-49ff-485c-a212-fafa8448de01/flowers_of_algernon_summary_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a0114de-54f6-427e-af5e-285074c032e7/60727820854.pdfIn PDF document text
    • https://7162416e-a815-4e2e-b4b4-2f1b6d3d7a1b.filesusr.com/ugd/0723a7_d9dac07faea843a3b383f60ed51b67c4.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000101a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A8 5552 bytes
SHA-256: 9748d1eb80c4d5ded3220dd3bd899883890545d80f8683b081200572ab9476a7
font_01_sfnt_off0001146b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1146B 10660 bytes
SHA-256: 437bb3a6d0698e1e5d588d95b58a200b85d2a8ab9947fa668086bb29980ab409
font_02_sfnt_off000138e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138E2 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15