Malicious PDF — malware analysis report

Static analysis result for SHA-256 03c45d65d170a385…

MALICIOUS

PDF

81.5 KB Created: 2020-11-09 18:17:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: bc40439058e4e543675b1c47f4d3773e SHA-1: d744d718f3392033dee6a58f666267bff98205b3 SHA-256: 03c45d65d170a385feb1d9e9fec8bd5308813ec6fc1fc8661d56a4973704c961
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 0.9998

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 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://trafftec.ru/strik?keyword=alpine+cde+172bt+manual PDF link annotation
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/wovexofek.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/1284c405-df25-4a5c-9c0f-c9ef63e286ae/download_speedtest_app_to_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/47099948890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ea37ead-5e14-43d4-a153-babdb470b297/80587467465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebf987f1-cb18-4957-b3df-7161d6ebf3c1/kepunuwunobor.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/nisofixirowel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9e0a33b-f1c6-4cd0-a430-2666f10c3aab/33994694487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/282f7301-eb34-4f43-88e8-68b9ad4eb71b/tebiwababutugud.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/architecture_drawing_lessons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d2c9c1c-af65-4632-a115-e55237e8982c/zaferadasenuwabirenidezu.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/haydn_emperor_s_hymn_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/40230290021.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/52150554500.pdfIn PDF document text
    • https://s3.amazonaws.com/kimoweworape/tudidapubas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20551aca-4cab-4862-911a-fd50c8ba0f93/xekujefakemux.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_off0001000d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1000D 5340 bytes
SHA-256: 0e616195532359d76e85090e6530160e0d3281746f11c830ac28388d58a1ee51
font_01_sfnt_off00011230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11230 11168 bytes
SHA-256: 0061699e02ee4b0e247ffc3952476b1f7ae41555668d765a4026749ffdc9839a

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