Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b44bf4d5f532fd1…

MALICIOUS

PDF

82.4 KB Created: 2021-02-18 07:40:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 457c906466b4312e9fabe5520486a26d SHA-1: 4c1003a081bcc2e3e904db8bdf7a33a89ba7899e SHA-256: 7b44bf4d5f532fd189ff11e3aecbd169025e5da0030d59c6a81f3ba227236fbb
104 Risk Score

Malware Insights

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

The sample is a PDF file flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'druttle.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, contains text related to 'A game of thrones 7 book set' and urgency lures, suggesting a social engineering tactic to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://druttle.ru/strik?utm_term=a+game+of+thrones+7+book+set PDF link annotation
    • http://avtoshkola-region26.ru/zoo_tycoon_xbox_one_breeding_guidebztv3.pdfIn PDF document text
    • http://jovanilimifolom.22web.org/15218906989.pdfIn PDF document text
    • http://xojopimo.22web.org/gemesejoku.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/xidazeze/sport_mediaset_formazioni_in_tempo_reale.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/bd_marriage_cv_format.pdfIn PDF document text
    • http://zilemugas.epizy.com/mafopiwo.pdfIn PDF document text
    • http://puxetixunelotaz.epizy.com/fusupapuwat.pdfIn PDF document text
    • http://pozonijegexovu.epizy.com/best_madden_mobile_hack_no_survey.pdfIn PDF document text
    • http://bidusopevix.epizy.com/llc_operating_agreement_template.pdfIn PDF document text
    • http://lalejifidesuwo.rf.gd/best_customer_service_interview_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/manual_cooktop_chamalux.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/icsee_pro_for_pc.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_off0000f8dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DC 5160 bytes
SHA-256: 7ab4c6a14b3090fb4539d410ac22f42b04e0c5ba740e43ae45b697fc31884833
font_01_sfnt_off00010a49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A49 10940 bytes
SHA-256: b75aa1f2ee9f0876d7718a152c4938f58c413012520f1416383f76e3ae6e4ebb
font_02_sfnt_off00012f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F2E 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

Open this report in the interactive analyzer, or submit your own file for analysis.