Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc2f813ba11d984…

MALICIOUS

PDF

77.8 KB Created: 2020-12-17 04:45:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: fd1f7ea3f890833f1d64ce27232eb75c SHA-1: b8ce29a5c1b77ad71d7c6f725ab52d89b84f7503 SHA-256: fbc2f813ba11d9840859cc2bec534a2298015e4bb8516ca7598a8bc6c05d3ccf
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit vulnerabilities or redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffi.ru/strik?utm_term=percy+and+annabeth+quotes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367687/normal_5fa66c383e972.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457839/normal_5fdac5e0ef0c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f8b1d51997c2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382196/normal_5fd030bbc8882.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409840/normal_5fd2d2265b500.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493917/normal_5fda7f3b3e0a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455659/normal_5fc9f8d36286c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5cd3c27a199023ad6e49f/t/5fca0ba4ee6dcf7e3638298f/1607076773026/my_home_design_dreams_mod_apk_revdl.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/el_alcoholismo_en_mexico.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/baruch_spinoza_philosophy.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/philosoraptor_meme_gen.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/64484712324.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/13562582329.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/theeran_movie_songs_in_hd.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_off0000f620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF620 5364 bytes
SHA-256: f5f76774533237ec9511f28c785812c07408a908d77379876710c08790a85fb5
font_01_sfnt_off00010855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10855 10000 bytes
SHA-256: 95b639a4515052c209dcf3f7208ef6dc9b2bf6ef93760b6c0f37a31c2aa7b74a