Malicious PDF — malware analysis report

Static analysis result for SHA-256 5431026b08e0077d…

MALICIOUS

PDF

72.6 KB Created: 2021-04-11 13:29:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 644a999e47435dab9b11099635e35d07 SHA-1: 758b5fec64e7d08101aa4ff90971544eddd6dbd1 SHA-256: 5431026b08e0077d000d7cf72df33f9fb929fa00b5107ba82586f226ee200a07
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lead the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL and the document body, though heavily obfuscated, suggest a lure to 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
  • 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=tarot+spreads+for+future+relationship In PDF document text
    • http://kujunat.medianewsonline.com/metukifudevinabisuz.pdfIn PDF document text
    • http://unosital.space/how_many_drops_of_lavender_in_diffuser82o1y.pdfIn PDF document text
    • http://hookup671.site/mackie_control_universal_hui_emagicr4rua.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/zomuzigo/pop_warner_scholar_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/jotujemejalorubo.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/how_to_test_goodman_pressure_switch.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/3281534061.pdfIn PDF document text
    • http://motuvogipe.onlinewebshop.net/crisscrossing_through_afro_asian_literature.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/wokupilalafaxanejevuji.pdfIn PDF document text
    • http://kofukobekageja.epizy.com/vanilla_twilight_owl_city_ringtone.pdfIn PDF document text
    • http://zimadiwiv.rf.gd/59685331491.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/balak_palak_marathi_movie_mp4_free.pdfIn PDF document text
    • http://medinivixajobo.rf.gd/savotemuwejozobazodigeja.pdfIn PDF document text
    • http://sekijipaladi.epizy.com/47416766493.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/tadokimubomawavotinul.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_off0000e0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A9 5080 bytes
SHA-256: 09d2337f888e8465e84bdf3113555658c53e00c70d41ecaf9d982bac17883d81
font_01_sfnt_off0000f1ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1EA 10264 bytes
SHA-256: 6464bbc8e1489865a1bba0a878dc7046eb52d6a77e0f4c5aaa05ddd42c788e5e

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