Malicious PDF — malware analysis report

Static analysis result for SHA-256 05b40e455ada3320…

MALICIOUS

PDF

72.8 KB Created: 2021-02-24 06:14:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 204bdf5849c22e06ff90b0d1af3b26f9 SHA-1: 706385b2a97acc8eb3772e4756f6537524aed927 SHA-256: 05b40e455ada33207a860336e015e352d59e7e613480b382de2e4794bbab9e9f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://crophysi.ru/strik?utm_term=chauvet+intimidator+spot+led+350+case'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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://crophysi.ru/strik?utm_term=chauvet+intimidator+spot+led+350+case In PDF document text
    • https://cdn.sqhk.co/naziwixolagu/hChiFhh/77085456257.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwezomu/7e56p53/gejolavujogewuvi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403816/normal_5ff1db209244e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486037/normal_60172d19280a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480891/normal_5fd9706650136.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/tuxexi/nba_injuries_report_updates.pdfIn PDF document text
    • http://maxabuxaf.rf.gd/90915097189.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/android_studio_vmoptions_linux.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/rudens_plauto.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/how_to_connect_bose_sounddock_10_bluetooth.pdfIn PDF document text
    • http://zukusuvajijip.epizy.com/lamujobinedo.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/kilematovozuzirusilu.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/37129321315.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/87703063292.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/blobby_volley_2_free.pdfIn PDF document text
    • http://favukimasinete.rf.gd/19538555644.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_off0000dc07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC07 5708 bytes
SHA-256: 121b2ef6a47f2c53ceae49a87dfb8073e36bcca76cf78dbb42621ecea615cf99
font_01_sfnt_off0000ef4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4E 11496 bytes
SHA-256: 83aeed9f4c5e5c0d894d9ef54838c75e7d2abeb954fdbd0197ef575c117d007e

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