Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed64121e1842d057…

MALICIOUS

PDF

66.8 KB Created: 2020-12-05 19:26:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: c6d1c11c83efcf17d1a170c5d13a9d7f SHA-1: dbae3b51cdc090603008a977a8398169822be2e0 SHA-256: ed64121e1842d05751da559cb18fa9cd7485a9b44c7b6c0fd99a2e5a70e167d5
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, disguised with a plausible lure related to Cisco security ordering guides. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded malicious URL suggest it's designed to redirect users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/123?utm_term=cisco+email+and+web+security+ordering+guide+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384471/normal_5f90ed00d8f07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5f9780204d84a.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/lupuvogotog/10048484238.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/91892397794.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/sofepifaxixupete.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/taegutec_cutting_tools_catalogue.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/samarasimha_reddy_songs_ing_audio.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17203e2fce462bc8fc7f8/t/5fc8aac7217b3604ede1e6ce/1606986439891/xitibala.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5933e3dfdd95b60f4df7d/t/5fc6ee9ac7c45a5eaf9879ec/1606872730058/zetazomafid.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/css_transform_translate_not_working_in_ie.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/bubusexakek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adf5fd07-b5c8-4c69-8768-27e85bcc1ce6/alvarez_rd8c_acoustic_electric_guitar.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/25056383587.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/65241298558.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/the_divergent_series_allegiant_full_movie.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_off0000c980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC980 5772 bytes
SHA-256: 7302b3e028b4fd29b0635a94fe1ec7c74551a4d658d7cb03039cdbfc1a0cb029
font_01_sfnt_off0000dd1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1D 9692 bytes
SHA-256: a1030d47f05d5bec5a3b6adf794881e66ec621724cd99aa1924ec497aec632c8

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