Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccce6ab0b1301b78…

MALICIOUS

PDF

77.0 KB Created: 2021-02-27 00:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dc0c9f20fd6edfe3455d0d0b4d66aad2 SHA-1: 1542bcc130ceba9a5e627a507d1100341cbbbc11 SHA-256: ccce6ab0b1301b780bc2cae6b4cbab161ca77c177fe6cf52d431544c31c6d0ce
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-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://leonvi.ru/strik?utm_term=is+river+runs+red+based+on+a+true+story PDF link annotation
    • https://kewidanuratug.weebly.com/uploads/1/3/5/3/135323433/fufufugodifev_dabekedi_gijovitulelagij.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/ib1RHM8/logo_esport_maker_create_gaming_logo_maker_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/nupasoxure/ejiKI3X/nidoxikanegovutimef.pdfIn PDF document text
    • https://sutivekawexebe.weebly.com/uploads/1/3/1/6/131636655/fufakuzurezefot-vojapijuvaro-lineneki-gasun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388065/normal_5fc92eeedf41c.pdfIn PDF document text
    • https://tegedibinatamam.weebly.com/uploads/1/3/5/3/135350324/mutefubogifa.pdfIn PDF document text
    • https://ditomivowulute.weebly.com/uploads/1/3/4/6/134679561/navozopab.pdfIn PDF document text
    • http://parkji5x.xyz/json_line_break_format2fjv2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383798/normal_60313c0c1b033.pdfIn PDF document text
    • https://cdn.sqhk.co/midipumep/dfuhaii/24454653157.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470038/normal_5fcb53bd37bba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464077/normal_5ffca0868c69a.pdfIn PDF document text
    • https://cdn.sqhk.co/kamozipu/JQYnjiQ/86296102685.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/muxegeza/gemivo.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/97636407517.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_off0000f078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF078 5024 bytes
SHA-256: 47b6693ee0250c322db553029aa6b80fc15f31653ba028b9159a17856116d43b
font_01_sfnt_off000101a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A1 11064 bytes
SHA-256: 258f9e9b81b5dafa1c1e0c3808dab981d098c15f80c788bee9ac6e1efdc7c72c

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