Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4ca1a6c2c233aed…

MALICIOUS

PDF

81.0 KB Created: 2021-03-14 05:29:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: be0ea12dcde74db9ed4584e5ade06f17 SHA-1: 5d981f78a0694a7c1fb11aa8ef9d8ae86a222ea3 SHA-256: f4ca1a6c2c233aedc0aebd2f9f515c2803649da65e52806fc0864dd0b2dae453
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 0.9995

Heuristics 5

  • 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 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://maypoin.ru/wix?keyword=rockford+fosgate+r500x1d+protect+mode PDF link annotation
    • https://cdn.sqhk.co/kurinunuwor/9njicKy/rewapexewobuv.pdfIn PDF document text
    • https://cdn.sqhk.co/nejajevafode/19poOIu/kimaxarek.pdfIn PDF document text
    • https://cdn.sqhk.co/lediname/ibhaXD3/hit_or_miss_lyrics_nfg.pdfIn PDF document text
    • https://cdn.sqhk.co/jivonaxadu/hcibMP2/slice_master_2000.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/varoximu/96845112260.pdfIn PDF document text
    • http://kepatuzazavew.epizy.com/excel_dashboard_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40c6becc-0908-4b49-b13c-a73247936ba4/rededipopunuvudukoga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebf5c02a-1893-4c2a-b059-762b7332ca5a/isentropic_flow_through_nozzles_and_diffusers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a10bc681-3018-40b6-9cf0-d673968b79a4/gazedaradipidisej.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/84712327187.pdfIn PDF document text
    • http://newotev.rf.gd/what_affects_military_operations.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/meruninilosajurutidedige.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e6da81-8e86-40d3-9a2a-8e256d0c8749/rodojaforanileluxuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb5aa37d-c361-4ece-9b12-6714d48985f4/twilight_2012_full_movie_in_hindi_download_480p_filmywap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe79f4ab-19c8-4409-aa30-422d6e030382/84965792442.pdfIn PDF document text
    • http://fibotemirazopo.rf.gd/avira_antivirus_activation_code_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0e4b2ce-90d5-4b83-bc02-7480996c1f5c/30861435273.pdfIn PDF document text
    • http://bolopanezodubun.rf.gd/adele_skyfall_piano_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b9c2e68-f838-4e8b-8461-88e29b9a926d/vaxeviwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1705d5de-d125-41c1-bec9-d2ca98b04291/place_value_worksheets_year_6.pdfIn PDF document text
    • http://valolezame.epizy.com/block_style_fonts_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db3785d5-7bbf-40d9-bb91-6b51f04f682a/pajixileratefavepoxuvuwi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEED0 5536 bytes
SHA-256: b065981752ad1448cbd590af8023cd93a2f327cb15444a564cf632ac5c90e0e6
font_01_sfnt_off000101af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101AF 10660 bytes
SHA-256: c073a1bc7f47f5bcdb615f95eaec95d025d1c93f18a98f948fd14fd222384e62
font_02_sfnt_off00012631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12631 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.