Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbdb479ebc3946ad…

MALICIOUS

PDF

71.3 KB Created: 2020-12-16 20:02:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1763057fd0739f011967a445a21ae4fc SHA-1: 5de600c0f7011ae056bc6e6a69185a7a65d1449d SHA-256: bbdb479ebc3946ada392a0ec16cd0968d2235212c82aecc2b32e01b3bd7a86b6
96 Risk Score

Malware Insights

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

The file is classified as malicious by ClamAV and an ML classifier, with a high risk score. It contains an embedded URI pointing to 'trafffe.ru', which is a strong indicator of a phishing or malware distribution attempt. The document body contains garbled text, suggesting it is not intended for legitimate user consumption but rather to exploit vulnerabilities or deliver malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/123?utm_term=the+hitcher+ii+i%2527ve+been+waiting+imdb PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473971/normal_5fa5c5540e887.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383449/normal_5f9861f64fb48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365613/normal_5f8c147d8c422.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/jixerubowi/dawalixibux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea3c28de-7cfb-470f-b55c-9a51beabf6d3/82357835363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a826f68d-2ffd-43ee-8214-818d4bdec30a/49022036434.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e471d3c8-1563-4465-b193-b773b72d3fc3/13316006467.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7bee1b0-8d6a-4cad-a75c-089a29730618/wajukuxubiwofatosunulelin.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/rojodipufo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a90058b-a744-4fcd-9e53-c7b576f0e827/homelite_245_chainsaw_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/xmanager_5_free_with_product_key.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/qualitative_descriptive_study.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_off0000d979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD979 5416 bytes
SHA-256: 3c542c0266ae66d6045e3cb9553618809600912487651179cad28b5444f5eb8f
font_01_sfnt_off0000ebd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD5 10696 bytes
SHA-256: cd64a5a0682fd36ecf29bbe43d46272249f8ba0ec0542f7bdf17a5a979f6df2a