Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3444597e631f41…

MALICIOUS

PDF

72.9 KB Created: 2021-01-09 15:10:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4a978f5c51218bcd140cc4237c8d8911 SHA-1: 7db0d3241ca58492d76ed2bd66a77485e9eb76c2 SHA-256: 2b3444597e631f413c1e44b11a920d2dfc31ee0ef11055c7afdf99523a08dedb
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the presence of embedded URLs and the overall detection suggest a phishing lure designed to trick users into downloading further malware.

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://traffset.ru/123?utm_term=gadsby+book+pdf PDF link annotation
    • https://cdn.sqhk.co/bedogipaxog/xhehbpf/tamil_new_movie_mp3_songs_free_download_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407062/normal_5fc760f2bc402.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413373/normal_5f9dfc4f1b4c8.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/jjhiwjd/90900396152.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368745/normal_5f90a5d6d9287.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/IighaWw/ludokotefujirode.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375076/normal_5faab30ddb286.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/guwutivupudutu/durban_beef_curry_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/english_guide_for_class_8_honeydew.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/bet365_casino_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/53079594821.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/bawenerife.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/jeopardy_tournament_of_champions_2018_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/13502078348.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_off0000e107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE107 5244 bytes
SHA-256: 59cb17c395c2d91f0f51e5bc57cde0bb3d72268b60847305ad21b920a7b3cd2b
font_01_sfnt_off0000f303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF303 10576 bytes
SHA-256: 398e2ee264a86b859a549bb92c591ae3f4c0c312d1fc64d31f671ded213eca83