Malicious PDF — malware analysis report

Static analysis result for SHA-256 8372e64550815893…

MALICIOUS

PDF

65.9 KB Created: 2020-12-14 03:03:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e4daeb87ae9f762c36ac2eb6507f2949 SHA-1: 16df3cfd09822e6f9c4a79eba94d29c14069f3b5 SHA-256: 8372e645508158936bed39cfd84a8413106820bd98d2955c856db32a20760483
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to 'trafffi.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded links are indicative of a spearphishing attachment designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffi.ru/strik?utm_term=taranis+x7+manual PDF link annotation
    • https://vogaxuruxav.weebly.com/uploads/1/3/4/3/134352923/kizolifugeb.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/wizedumi/4-4-2_soccer_formation_player_responsibilities.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/tafunuzibur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6c781c89b935f15ddc3c4/t/5fca57d1ac031d3c8e8b445e/1607096279509/39834795734.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/arteriovenous_malformation_neck_pathology.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/kiran_publication_elementary_mathematics.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/arcgis_spatial_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/vomapiluxizogukusel.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d9d28787e879896bb85a/t/5fc65a097acac6192a9aec5e/1606834700303/e_tickets_liverpool_fc_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/fishing_report_galveston_pier.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/riguzetebowafa.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_off0000c412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC412 4928 bytes
SHA-256: 91a2e1f1922ff57535a32f47215e73b64c715300b8636274ef3a7c6171d05e26
font_01_sfnt_off0000d4c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4C7 11464 bytes
SHA-256: 4453ce014cf4f138e6e2687bb5c3e5f1723634fbd34e9e5b7f807f642d23789d

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