Malicious PDF — malware analysis report

Static analysis result for SHA-256 af576259182b6161…

MALICIOUS

PDF

92.9 KB Created: 2020-12-29 18:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a86f2093d492a332f117dd7c9b94e027 SHA-1: 0ca6f5da9e941173c8cae7b1fb4cb711990a1b16 SHA-256: af576259182b616140aa41af1350ddd85572c1537f3a5ef5aec265c5d881f5fa
214 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, with several pointing to known malicious redirectors or link farms. The ClamAV detection and ML classifier also indicate maliciousness, specifically related to phishing. While no scripts were extracted, the PDF structure and embedded URLs strongly suggest a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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.
  • 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://gettraff.ru/123?utm_term=thermometric+titration+sources+of+error In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446038/normal_5fb9b39076188.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460972/normal_5fbb547526d19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375086/normal_5fb2585598413.pdfIn PDF document text
    • https://ginuwawabesinu.weebly.com/uploads/1/3/1/1/131164414/perigovavaleka_talimuzujil_jaredizofobebi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418171/normal_5f98382e7bb54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402289/normal_5fce26859582a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374698/normal_5fdd8c414db9f.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/nevowimo/emotional_scenes_in_tamil_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dd8e202-f4ee-46fe-a1bc-d61832b219fc/you_are_the_one_that_we_praise_audio_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/bayer_season_long_weed_control_concentrate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa5e5e5a-cb60-4fc8-8746-a6746ff6c045/68454418124.pdfIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/padikabezumaru.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/google_sheets_vs_excel_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/jinureduxilo.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_off00012e07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E07 5036 bytes
SHA-256: 10b8fb9b3254985d75d741f6c8eff39f67a267b698b6b18e9dbb25de56feb8f5
font_01_sfnt_off00013ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EF7 11524 bytes
SHA-256: deb5fb39cc4a940e34465a5cefb0c48e5360022441c7a82e06c6e4af84830f8d

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