Malicious PDF — malware analysis report

Static analysis result for SHA-256 b031baea3cbc97af…

MALICIOUS

PDF

79.6 KB Created: 2021-03-02 23:54:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3dba357ba0ea8a28c68bb1fca65fec28 SHA-1: 41be268c7f7bbfc8d049b8037f8827cd982c99f1 SHA-256: b031baea3cbc97af018c5db77a700b3495a87550472930f25290104f806b3580
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded URL is designed to trick users into clicking by mimicking a search result for a common technical problem. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://yafferge.ru/strik?utm_term=why+does+my+sony+tv+turn+on+by+itself In PDF document text
    • http://lenuvivureropi.scienceontheweb.net/boy_roald_dahl_audiobook_free.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/tomamujuf/form_c_registration_certificate.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/66571380939.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/classroom_objects_worksheet_doc.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/97540836723.pdfIn PDF document text
    • http://kutoxinupuroxo.onlinewebshop.net/did_light_die_at_the_end_of_death_note_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/montserrat_semi_bold_font.pdfIn PDF document text
    • https://s3.amazonaws.com/sefepugolupalax/73814507701.pdfIn PDF document text
    • http://sajulugebimisu.myartsonline.com/treatment_interventions_for_anxiety.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/auto_caricature_maker_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/free_surat_yasin_dan_tahlil.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/88234552083.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD0 5252 bytes
SHA-256: 1fba54bab68eeb56c6efa96ce7fcc3a60d85fa5cb40c2d521b9d1aed42a7de0b
font_01_sfnt_off00010c99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C99 11120 bytes
SHA-256: 9445a7024bb09dad683692e4cbde19cf43059ce77be08e70a8bba27938440494

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