Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3dff55570beea66…

MALICIOUS

PDF

77.6 KB Created: 2020-11-24 03:04:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 53090bb71eaa5507d72849fca4517ae4 SHA-1: e7835b214cfffe7d6a0a286d8b2cce000e5358d6 SHA-256: d3dff55570beea668ab40474221e9497c6a95613c49a7a656b48fbad35afa7c5
214 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The embedded URLs suggest a phishing or scam attempt, likely disguised as a job opportunity given the 'cv examples nz' parameter. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate malicious intent to redirect the user to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/strik?utm_term=cv+examples+nz In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5fa6c3159691c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492892/normal_5fae483616ba6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453118/normal_5fafdac2a1574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373297/normal_5fa0c4a73a569.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408595/normal_5faf0071e34dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384029/normal_5f9b74e2d6b15.pdfIn PDF document text
    • https://kikuvabafot.weebly.com/uploads/1/3/4/3/134332304/majaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502236/normal_5fb87fd977f5c.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/putapov-bikogotes-kepafe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464330/normal_5faea04d1a4de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5f87a45a95ecd.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/jepinebawo/bawosagotogomabakisapofux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07eb56e2-1562-4938-becb-9a625ac8fbf6/wesozigesirolifipola.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/53974048342.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_off0000f208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF208 4952 bytes
SHA-256: ad6988fada0288f975d7456ac4ccf82817a5d63b64c5adb4cebeadcd63398191
font_01_sfnt_off000102db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DB 11436 bytes
SHA-256: 0eb2dad0a531696ba6fb397b4bf64284da143bf710b50cdd4031f4d4e6820218

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