Malicious PDF — malware analysis report

Static analysis result for SHA-256 abc2a365875fd369…

MALICIOUS

PDF

76.7 KB Created: 2021-02-18 22:49:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 193dc72d3cb1a8ce5f92d10aac7f1f0c SHA-1: 28b785938889d498ebd50336d065567d2d0d83c2 SHA-256: abc2a365875fd36972c83ac53272f28f9eb2de70bd90151fe5d1ce90b9819e59
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL, 'https://leonvi.ru/123?utm_term=bosch+silence+plus+50+dba+manual+pdf', suggests a phishing or social engineering attempt, likely masquerading as a search result for a product manual to trick users into visiting a malicious site.

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://leonvi.ru/123?utm_term=bosch+silence+plus+50+dba+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/jedepazisu/bnhE8kK/dinosaurs_world_toys.pdfIn PDF document text
    • http://bluebadgeapproval.com/22590470360i50sn.pdfIn PDF document text
    • http://vkysnaya-eda.site/describing_character_worksheetqlba2.pdfIn PDF document text
    • http://mklhhhh.space/french_and_indian_war_map_worksheet_answer_keyzrknd.pdfIn PDF document text
    • https://cdn.sqhk.co/lopumilekana/gihjZhg/real_time_shields_mod_apk_no_ads.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/66ggVrm/susuzixa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/savukojubusum/rekulowa.pdfIn PDF document text
    • http://jiwuwusa.epizy.com/kozevuduroxagetorixoxom.pdfIn PDF document text
    • http://xafaxeko.epizy.com/84856015093.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/46668526223.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/because_of_mr._terupt_full_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/76168330378.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD8 5556 bytes
SHA-256: 04722ef2825cd25c754282112c0994504faf11b11cd330b24940712c3d1ade05
font_01_sfnt_off0000f284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF284 10984 bytes
SHA-256: d5e8e81c3f52d3d4467f19d42fd98f6b6e07ad255d6073c196aa00658a70cb60
font_02_sfnt_off00011839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11839 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3