Malicious PDF — malware analysis report

Static analysis result for SHA-256 e43a0263699544b0…

MALICIOUS

PDF

69.7 KB Created: 2021-01-18 05:29:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: b8a221d1b2b170036948c270cafd0f7b SHA-1: f225a55d1884fa326913cdd79cade2ee5193a935 SHA-256: e43a0263699544b040e2d68a9a3f544248115a1547b99d5256d146cfde4b6160
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://trafffe.ru/123?utm_term=seal+point+cat+breeds', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests an attempt to disguise the malicious nature of the file.

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/123?utm_term=seal+point+cat+breeds PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4502439/normal_5ff09d5d9c034.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418166/normal_600123699962f.pdfIn PDF document text
    • https://site-1176953.mozfiles.com/files/1176953/transparent_screensaver_macos.pdfIn PDF document text
    • https://site-1247443.mozfiles.com/files/1247443/arashi_ni_shiyagare_episode_guide.pdfIn PDF document text
    • https://jofusowosa.weebly.com/uploads/1/3/4/7/134764533/feremotefofolape.pdfIn PDF document text
    • https://zivawopoxiba.weebly.com/uploads/1/3/4/3/134355714/6177031.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462056/normal_5ff436837c743.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421200/normal_5fb4639c6d290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460231/normal_5fc0f296cc24a.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/matogapibelifiv/wenite.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/how_to_sort_worksheets_in_excel_alphabetically.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/love_status_shayari_video.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_off0000d4d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D4 5312 bytes
SHA-256: b6d665e0e297bc6630f3a7f4a5ceb3db6d49e83902b5a05bcad6bae8a1989329
font_01_sfnt_off0000e6e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E0 10364 bytes
SHA-256: fa6e549ed13afa6f18e315f21cd31c689430c3f81bebdd5227955e233ac291c6