Malicious PDF — malware analysis report

Static analysis result for SHA-256 a58648434eb57eb6…

MALICIOUS

PDF

68.6 KB Created: 2021-03-24 15:50:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f6c72a69e58b332184a3ffe3051885b4 SHA-1: 5882dda4a39e4f026d93f765f27e7606d0ddc636 SHA-256: a58648434eb57eb6e0aba26faab451f178e64a1a14b8f0044060594125442e78
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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://jumiwimov.ru/wix?keyword=tengo+ganas+de+ti+pelicula+completa+free PDF link annotation
    • http://ramifapufebi.scienceontheweb.net/gogodamigafijejexana.pdfIn PDF document text
    • https://cdn.sqhk.co/gawisibiw/jjaQZjf/classical_piano_music_sheet.pdfIn PDF document text
    • https://betoxugibujimiv.weebly.com/uploads/1/3/1/0/131071043/0cf8d134087481e.pdfIn PDF document text
    • http://nodefiw.medianewsonline.com/biology_investigatory_project_on_cancer.pdfIn PDF document text
    • http://datiwufirul.medianewsonline.com/pemofi.pdfIn PDF document text
    • https://gopufijubasid.weebly.com/uploads/1/3/1/8/131856987/bokepasetiwuzaf.pdfIn PDF document text
    • https://tazejoga.weebly.com/uploads/1/3/1/3/131383942/9809834069dc217.pdfIn PDF document text
    • http://dujopaximejuger.iblogger.org/antilog_table_file_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jimevexir/if5ohfv/70096800184.pdfIn PDF document text
    • https://cdn.sqhk.co/molodomo/Fnif6yq/46985921983.pdfIn PDF document text
    • https://vimavopama.weebly.com/uploads/1/3/4/7/134769365/galipofer.pdfIn PDF document text
    • https://gomemaliji.weebly.com/uploads/1/3/4/0/134040406/paperepor.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/91d749cd-86b9-4c8c-940d-caad543f0028/lowogaxulabu.pdfIn PDF document text
    • http://xurosuforudev.atwebpages.com/60422991951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b2403d9-8dd3-4e04-9b8e-a63dd71f2a62/bugowapakijibepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79579d31-f022-4d18-af1e-d951db2aa5ae/26530232181.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20102338-896f-4ed0-836e-c47976349e39/nasorama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/436f4960-dae0-4f7a-a168-2e74bee5f08a/best_fishing_lures_for_bass_in_summer.pdfIn PDF document text
    • http://fowowoge.rf.gd/11666622555.pdfIn PDF document text
    • http://pilulozames.epizy.com/tokeregujunifafibufeg.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_off0000cdd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDD9 5424 bytes
SHA-256: 4b3208232dcfee8771db5fa2fcaee145d1b878bafd8552d40ce9cfb82cb2241a
font_01_sfnt_off0000e03b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03B 10700 bytes
SHA-256: a83f7bd83d48a9af0eea75d67e3162206f1ba1307725e8e0629dd27a3c80c68f

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