Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f0140c8e304f4e…

MALICIOUS

PDF

82.1 KB Created: 2021-03-06 14:44:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 12cda05502340c0d78e6ff618bc07584 SHA-1: 11cfe7fcd7948b0cea5de65685fd64c8b21ba382 SHA-256: e9f0140c8e304f4ef514fbc5459e8f35591ffb7e8018b35bad941f3f9fb655ac
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9997

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://jumiwimov.ru/strik?utm_term=is+the+third+maze+runner+on+netflix PDF link annotation
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/xekipunuviw.pdfIn PDF document text
    • https://bojemesazam.weebly.com/uploads/1/3/4/5/134598919/1d326e9ccc56b.pdfIn PDF document text
    • https://xuzumuja.weebly.com/uploads/1/3/1/6/131636792/b5cfc67ece28e.pdfIn PDF document text
    • https://funujitumim.weebly.com/uploads/1/3/5/3/135347265/kekarumuku.pdfIn PDF document text
    • http://banujal.iblogger.org/chamelephon_apk_mirror.pdfIn PDF document text
    • http://pelososone.22web.org/dark_souls_3_faith_build_strength_or_dex.pdfIn PDF document text
    • https://zowajapizuxazo.weebly.com/uploads/1/3/0/9/130969341/gevagasakefupas.pdfIn PDF document text
    • http://jixaravaxagisuf.22web.org/sekisirulunadowipojuzube.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/1d1e3b97-b5b8-4e06-99c7-28203b1baa90/how_to_write_assessment_report_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb17d9e7-49c1-4354-80ec-cfa37911d126/can_you_name_your_child_god_in_us.pdfIn PDF document text
    • http://gununusaw.epizy.com/ranaloroganunixafelid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/774c8d34-05f3-4022-b733-da064049695a/80610638785.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/parrot_bebop_drone_instruction_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/jukeli.pdfIn PDF document text
    • https://s3.amazonaws.com/nunakixuma/dupunogafogipivofotupu.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/jiliromubovotot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e89af33-184a-48fa-9037-77e725a10388/the_dynamic_laws_of_prosperity_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/21292608912.pdfIn PDF document text
    • http://pofepopogako.rf.gd/lademokegasajaziwela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7e87893-b740-4690-a57c-e434118faed2/tojuxofifurudafo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fba47f6b-57ff-4f18-98e2-a413557c29ef/the_standard_insurance_ratings.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_off0001021b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021B 5204 bytes
SHA-256: 352e8c5a2b6dedf1f1a2b18252e89906202f562a7e71e31e923d544520257865
font_01_sfnt_off000113a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113A9 11484 bytes
SHA-256: 4d0a7a5367f687a2c52198c422411bf7ff8c93601839d45ec077206b3e1a00c0

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