Malicious PDF — malware analysis report

Static analysis result for SHA-256 a548bf9a9a69f7d0…

MALICIOUS

PDF

84.2 KB Created: 2021-01-06 16:07:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 29c1ee862f802cd17f960fe43635c41a SHA-1: 724e46be4cbf6f3e29fc661a3625e2a55b50aee0 SHA-256: a548bf9a9a69f7d04c2b7f6252f787155b7d8a0f3168f3588e54154500de8f42
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 also flagged this PDF as malicious, indicating a phishing or malware distribution attempt. Although no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content.

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://cctraff.ru/aws?utm_term=alucard+ml+guide In PDF document text
    • https://wuwabisa.weebly.com/uploads/1/3/1/6/131606234/womed_fabemanapukiwe.pdfIn PDF document text
    • https://kisigitoteke.weebly.com/uploads/1/3/3/9/133997396/6583072.pdfIn PDF document text
    • https://cdn.sqhk.co/wemonamo/hiihhif/peloxoxisobinomadoz.pdfIn PDF document text
    • https://cdn.sqhk.co/bowewulaxam/uhihmhc/wozumagodaw.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/bce5f.pdfIn PDF document text
    • https://nukofagola.weebly.com/uploads/1/3/4/8/134883999/2905a3106dcfe.pdfIn PDF document text
    • https://bipinutafo.weebly.com/uploads/1/3/4/3/134358532/laxelivijexeveg-vimopef-dujoda.pdfIn PDF document text
    • https://xipijixulureju.weebly.com/uploads/1/3/4/3/134377958/suzomos.pdfIn PDF document text
    • https://dezilitew.weebly.com/uploads/1/3/4/7/134728488/niwoxunonomu.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/wetevali/retaxusupivavis.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/brown_sugar_2002_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbeb6b9b-fe70-46af-93a0-6bab0bb6a6d8/transmisiones_automaticas_ford_windstar_2001.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/believe_in_nigeria_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxutedi/biot-_savart_s_law_in_vector_form.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_off00010dbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBF 5068 bytes
SHA-256: 4f4fbd0900a7ee7ed6eeec71852a41aa4d35318c624e4b285b1fdfa1fb6abe25
font_01_sfnt_off00011ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EE3 10916 bytes
SHA-256: f806823a121448f19bcd16b3c2363cf733b2c732e70e6358d271dc4b90f2a507

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