Malicious PDF — malware analysis report

Static analysis result for SHA-256 d475ce04c31f1da2…

MALICIOUS

PDF

61.5 KB Created: 2020-11-11 15:02:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ca1a1175ad01d61e4bc510db5f2aaf96 SHA-1: 907cfedb64c5e2573c7162b49566516f8bb3a630 SHA-256: d475ce04c31f1da24eba19cbd1c83979b5fcb7df271c6aa33af50127924d4df5
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://traffking.ru/123?utm_term=free+golf+card+game+online+play PDF link annotation
    • https://lakupemeza.weebly.com/uploads/1/3/4/2/134235705/vosegiginolarima.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/pojojagajevuxa/lufilewo.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/jupixipujunusij.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/52545813668.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/air_innovations_humidifier_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6be83b2-f636-45f2-bb23-7c2c0791b85b/63765035817.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/raxagerirepijemufap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3671c88-4278-49f2-a2f8-0388ad5b6c4f/52074365834.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/giant_stitch_plush_bed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8ea537a-aa03-4a2b-8fd8-f9032234cf6c/dodavimokujumusolavadin.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/characteristics_of_amphibians.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/784b5d55-3e88-4d7c-8bf7-8178c0c62eaf/84802934289.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/91928894642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5588123a-4e13-4d03-9f1b-e32974471568/3845994932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6b7439f-91a3-4d2d-b6af-dc83e020d3a5/30044354588.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_off0000b5b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5B1 5356 bytes
SHA-256: d8e051cd4029ab3a78799b5bbf544f68ad7cba8b00d17fe98c3e59df628dab41
font_01_sfnt_off0000c7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E4 9760 bytes
SHA-256: 00700ae4a9631e9e3cfbca1686f9dfef9053d2b83982c86817ae9ebe6c164279

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