Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e3ab4f83eab3cb1…

MALICIOUS

PDF

73.2 KB Created: 2020-12-19 00:52:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f9745a2eba7b56833b4696eab6297b25 SHA-1: 043ba56f88f57621be30b4017682ff7f5561ca69 SHA-256: 7e3ab4f83eab3cb140a900e695d1d916db8a7eb40fb65185b4dec1fb2defcb06
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 pointing to other PDFs, suggesting a link farm or redirection mechanism. The primary malicious URL identified is 'https://traffset.ru/strik?utm_term=meridian+resource+company+mailing+address', which is likely used to redirect users to a phishing or malware hosting site. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://traffset.ru/strik?utm_term=meridian+resource+company+mailing+address PDF link annotation
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/c896d9e22.pdfIn PDF document text
    • https://motutipe.weebly.com/uploads/1/3/4/6/134674000/bevefef_lobaxukade_lepesesilupane.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f0c85232-3460-4f9a-b953-6330549e04ae/fodiseponibofixis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54b4f679-dec6-4450-af39-457b26a2b18f/pibawepexegajojafeledu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df01b63b-0851-4c6e-92bc-b16775f197a6/wivexuloketezawigewiba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73e3ed2d-1ae9-4728-a2c7-2218c83ba219/81456851859.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/download_windows_10_64-bit_iso_file_official.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e581fa9-a0ca-4694-8775-0e345120dab3/daden.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/86685082911.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01bbf951-9f0b-4d1a-9b23-70f397811444/the_rack_fitness_guide_and_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/desarrollo_de_sistemas_de_la_informaci_c3_b3nt.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F6 5304 bytes
SHA-256: 18f4074ba67cef8a6eac96a44ec467b0935fc691b6f3d138ef3c01379da940b9
font_01_sfnt_off0000e4e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E4 10964 bytes
SHA-256: 15b6b95ddacf75a2f89dee13c9d01427631ffa57683dcd8ecaac3094b39b1327
font_02_sfnt_off00010a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A3E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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