Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c947af5901fd1b5…

MALICIOUS

PDF

78.1 KB Created: 2021-02-12 15:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 8853da01f1e51bf7065522a0dac97d52 SHA-1: 5dd218db0d231fb3a00fb78bfb0003e309641e26 SHA-256: 3c947af5901fd1b5bc431d4c10b1b1f513f076af34fd6a3949a2fc7e3df43877
156 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 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 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.
  • 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://jottigo.ru/wix?keyword=boom+beach+unlimited+diamonds+hack PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403806/normal_6010aca4464db.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489730/normal_5feedd4553474.pdfIn PDF document text
    • https://cdn.sqhk.co/vikoparif/jedJtgd/glass_dining_table_set_for_8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383922/normal_6021a2f9562b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463308/normal_601cdd9d8e236.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/etMhijh/sandisk_memory_zone_for_pc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419415/normal_600e573e88527.pdfIn PDF document text
    • https://cdn.sqhk.co/savageven/jjbt7fj/lagilafufaposozenud.pdfIn PDF document text
    • https://cdn.sqhk.co/noruwotil/HOgcieQ/xafukigizo.pdfIn PDF document text
    • https://wifojulov.weebly.com/uploads/1/3/1/4/131438113/diretod_zuvuv.pdfIn PDF document text
    • https://cdn.sqhk.co/wopiwozaso/jh5mMif/93357724319.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475739/normal_5fde07efe53da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476765/normal_5ffaa9c5a11ba.pdfIn PDF document text
    • https://bonosojemigapa.weebly.com/uploads/1/3/0/7/130776366/cc96f.pdfIn PDF document text
    • https://figowemepiwe.weebly.com/uploads/1/3/1/3/131398533/68c55984e703aa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384820/normal_5fd644a406784.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/ehiKhhk/breadwinners_trophy_club.pdfIn PDF document text
    • https://cdn.sqhk.co/gogoturowib/JpqigVX/18441247771.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/sizabo/lalamezosubovizowidugifu.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/lerutetiterigunuzamif.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/evine_daily_program_guide.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_off0000f5ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EC 5336 bytes
SHA-256: caa7f32dc3a61535a0a07d78de7a3466ee05ab1875a42bf8534270cb62d5d69a
font_01_sfnt_off000107e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E8 10276 bytes
SHA-256: b9ded1d7c0fac39b94d96ed48adbb452dcff85f45a67751d33d3a2e8c4969d85

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