Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1b610e04c087cf…

MALICIOUS

PDF

64.2 KB Created: 2020-11-29 08:49:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: ed8b0494912e232802fc9d97e14d44ee SHA-1: bef9be77708bca94ccfb7ee1f593b6bb0890a405 SHA-256: ba1b610e04c087cf73d77dde7a8630bef0a4073471cb9619b023a930d59522eb
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it is designed to redirect users to potentially malicious content, likely for phishing or malware distribution.

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://trafficel.ru/strik?utm_term=appliance+repair+specialists+llc PDF link annotation
    • https://gitexapovaje.weebly.com/uploads/1/3/4/4/134464395/safomalabekitex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502175/normal_5fb7b25961c86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f918d6553551.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370264/normal_5fc2da60d31d8.pdfIn PDF document text
    • https://valezofijamope.weebly.com/uploads/1/3/4/4/134445284/84d24a86.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/b5142d8c-f4c2-4f90-8b36-8d9f86775f54/meronedufuw.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/international_carrom_federation_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/joshua_martinez_death.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/app_smart_audiobook_player_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e6f093b-6a00-4998-bf3a-0112bcf764cd/nosadafidigenib.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/19782484148.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_off0000bec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC2 4916 bytes
SHA-256: 8c6abc20486f0b72e879f7331c2b34de532aee9f8858dc5e233156f2d387f2bf
font_01_sfnt_off0000cf86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF86 11000 bytes
SHA-256: de91a64388cffc5b407cf5aa3ca8ee491c0b478c15a1a1f063e503c5171c8756

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