Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d3cf4ac3ff230eb…

MALICIOUS

PDF

72.9 KB Created: 2021-01-30 16:02:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 6ec5c44e3accfe6faca11b923bd21990 SHA-1: d62c34a8f9458ef0c9588a031188a17c176eaf78 SHA-256: 0d3cf4ac3ff230eb6fd85b9c177a2d84a1c08f3215698f880c1099bed39f776e
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were extracted, the PDF structure itself is weaponized to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/aws?utm_term=commando+sniper+game+mod+apk In PDF document text
    • http://prostotit.site/adding_and_subtracting_integers_worksheet_kutagf9bx.pdfIn PDF document text
    • https://latitatuforuza.weebly.com/uploads/1/3/1/3/131398212/4864539.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453142/normal_5ffe4ad071002.pdfIn PDF document text
    • http://itfamily.pro/dragon_shooter_apk_download_latest_versioneg695.pdfIn PDF document text
    • https://nezuvaju.weebly.com/uploads/1/3/0/9/130969963/beremegimepu.pdfIn PDF document text
    • https://xojakonokixamu.weebly.com/uploads/1/3/1/1/131164577/91f0ee6fc03.pdfIn PDF document text
    • https://fedoxamanisoru.weebly.com/uploads/1/3/4/6/134668372/vuxedi_bebex.pdfIn PDF document text
    • http://pulemovidake.22web.org/guidelines_new_definition_of_default.pdfIn PDF document text
    • http://wubegewefek.iblogger.org/92078969458.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420902/normal_5fd29389be32a.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/wewuxuviwar/boost_your_vocabulary_1.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/transform_botchling_into_lubberkin.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/latter_days_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/ayushman_yojana_trust_online_form_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/if_function_in_excel_2010.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_off0000e0ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AE 5216 bytes
SHA-256: a0ca43de86a1ea9eaf4b4f4b9beb5f63399677e1686902ade7b6322d9cb80a5f
font_01_sfnt_off0000f252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF252 10652 bytes
SHA-256: 302e2ef71cdca8eb75b8036894151201a02fd754a66d544acf311e28e4ee0725

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