Malicious PDF — malware analysis report

Static analysis result for SHA-256 07dccb84b714c799…

MALICIOUS

PDF

74.0 KB Created: 2020-12-21 04:03:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: a2c79249b6cc6cf9e9ecb0e737b89e8f SHA-1: d7a8c90973c0289c60d873ad6bfb450cb0063797 SHA-256: 07dccb84b714c799e652a489fcacd8587ca86a426b23931f1b791810d7a29712
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with at least two identified as malicious redirectors. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves luring users to external, potentially malicious, websites through these embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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/aws?utm_term=globo+reporter+apresentador In PDF document text
    • https://gixodavo.weebly.com/uploads/1/3/4/6/134632057/6742303.pdfIn PDF document text
    • https://vegilirebaj.weebly.com/uploads/1/3/1/0/131070576/6212346.pdfIn PDF document text
    • https://xujebope.weebly.com/uploads/1/3/4/0/134018561/9749781.pdfIn PDF document text
    • https://zaxizibu.weebly.com/uploads/1/3/4/6/134672664/4325061.pdfIn PDF document text
    • https://xuguxoxarakijob.weebly.com/uploads/1/3/2/7/132740494/kimamugubesivax_pexoxujitig_joxeni.pdfIn PDF document text
    • https://jobalexaxikut.weebly.com/uploads/1/3/4/8/134892204/7ae37.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/c392bcba-963e-4217-8a05-f56fc1621f36/rilajoni.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/aws_console_key_pair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc4c5bfe-3cb8-42ba-b27a-09681c44978f/xokilelugog.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/lightning_painting_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/betimugi/19008656360.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/fire_emblem_robin_cosplay_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/76180599629.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a68ee45e-81fc-47d2-9ad4-fa73568d5b11/magnetic_field_lab_experiment.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_off0000d839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD839 5124 bytes
SHA-256: 3efbc3112d667b0af01e6c6bd8ecafb4cec1f658302c7d13d86beda0915c1e11
font_01_sfnt_off0000e9a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A7 16916 bytes
SHA-256: ad806b66109f5386d24bcb85e67e9eafcfb62153af25f58895669b51245a77b6

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