Malicious PDF — malware analysis report

Static analysis result for SHA-256 398fccd061576b4e…

MALICIOUS

PDF

78.4 KB Created: 2020-12-17 13:16:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: bd8ca61ced2db03eeada177b24742ff4 SHA-1: 98c159ab31ac83cf049f3e53339c6a30fc0fca62 SHA-256: 398fccd061576b4eebdb1e5ba6472c4fab84968d986f3064d690a84259b1ebbf
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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://cctraff.ru/123?utm_term=timeline+of+western+philosophy'. 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 0.9995

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://cctraff.ru/123?utm_term=timeline+of+western+philosophy In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tobito/luvizosi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1015360f2895dc1e86a3c/t/5fc4700c3c02f22b9d9b165c/1606709262780/pajuzojeb.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/modernity_meaning_yahoo_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6a9dc8139af03766d2bb0/t/5fcd58f21e1a4d7de13be8d6/1607293171295/dirt_bike_race_tracks_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/tubebozuduriketo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2558fdfd-253a-4aaa-8bed-f8a669d312ce/movegivasim.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1145bc819f1cf4a04bed/1606291781685/69850913587.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/navekotepebuniduxikowe.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/23731708187.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5a543f75b16643cc6693/1606376021206/so_you_want_to_write_a_fugue_sheet_music.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_off0000f4d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D3 5072 bytes
SHA-256: 516b923a1e2721405e33f70673388833cc3eb3c62f901d19b91bfc38a59f5b92
font_01_sfnt_off00010607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10607 12328 bytes
SHA-256: ac4f103b62bed8bd846367a54f998371793124bffc7dccf0b7d42be139073bda

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