Malicious PDF — malware analysis report

Static analysis result for SHA-256 55a0b43fc2c20507…

MALICIOUS

PDF

74.9 KB Created: 2020-11-14 06:15:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1fcd1f8f6f204ed02f57c74dba6ebf50 SHA-1: d54952de93e3331a2673b19f0508465beaa4906f SHA-256: 55a0b43fc2c2050741f808eb3459ae6095397d39cac18932a069c51ed867d1aa
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, masquerading as a search result for a TV show. This URL is likely intended to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/strik?utm_term=corazon+valiente+episode+206+parole PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375700/normal_5f939125a0f4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_5fa081a37f3ba.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/gaguxisomi.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/3665246.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374838/normal_5faafac526ed0.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/6bb049792.pdfIn PDF document text
    • https://tubumafipe.weebly.com/uploads/1/3/4/4/134458357/3384702.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/divikufifir/jediloruli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b87da1d-9819-47f4-9151-3e397bd7f3ff/q18s_smartwatch_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/sql_server_tutorial_point.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_off0000e5ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BA 5396 bytes
SHA-256: ec43f8df1f33817861cb0761f1e044302d3e8d6274d8f02df6069c48704ba173
font_01_sfnt_off0000f829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF829 11924 bytes
SHA-256: d35b391c29e5303550cb6adb9e4d68f922ce66915019d1be16d34578e806f46d

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