Malicious PDF — malware analysis report

Static analysis result for SHA-256 71aa32e0b8834b54…

MALICIOUS

PDF

67.7 KB Created: 2021-01-04 21:00:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 6a30835c99623fb67bea4436dc70359b SHA-1: e5ccf5a8e8eb31753d5353d8d3a9a7ec12681d09 SHA-256: 71aa32e0b8834b5495ed9538cb1dd5b26da2b7ee8eb8f561d9d0a3fc1cfd7a18
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, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the presence of a malicious URL points to a phishing lure, likely delivered as a spearphishing attachment.

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://traffmen.ru/aws?utm_term=sbs+tas+tv+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421336/normal_5fd1c2b89a596.pdfIn PDF document text
    • https://cdn.sqhk.co/pufojoloz/Ljbifjj/sozesebozemukefez.pdfIn PDF document text
    • https://cdn.sqhk.co/bofilewidil/X8ciowk/xojelukemexavulagizuranuk.pdfIn PDF document text
    • https://cdn.sqhk.co/todusukiraxi/chh5kvI/jijimijobunumexapozuwoben.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418385/normal_5fb39bd9cf832.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413983/normal_5fcff1a1251f8.pdfIn PDF document text
    • https://cdn.sqhk.co/mozedizupi/jOonGib/zonetizirikidat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393632/normal_5feafc4638630.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f8784bce4214.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452621/normal_5ff2c520bf3b6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f1a2f19-63a1-489f-9c41-b63bcf051f28/region_26_orchestra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75b8780-3985-4df7-8b4b-29721fa6e4bb/jedofavatufezuxukurewiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/591a819c-e8ef-491d-8dec-c789c023e128/vavibobuvizu.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/answer_and_counterclaim_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c6fa91d-baaa-454d-a54e-faec3b387ce6/rugujuleterufaworenele.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_off0000cc87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC87 5168 bytes
SHA-256: c699d80272390cc1b451ee11cde50486c7123777d7f794504a7233ab4d05e36d
font_01_sfnt_off0000de32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE32 10444 bytes
SHA-256: 2d84590263ea74e5fe8affdf17da1c08a9eabe1cc4c307100570fa69ae04b96e

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