Malicious PDF — malware analysis report

Static analysis result for SHA-256 593d3d7ae44fc5c0…

MALICIOUS

PDF

62.0 KB Created: 2020-11-18 10:00:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 45dd4cfaaa5d4ef201acbfa1265855b1 SHA-1: d4dba62d38bd648ebb97929dcdc8f3638af4cc4d SHA-256: 593d3d7ae44fc5c0522266cbd83cf6e725f683de3bf21ae7b995784f137a9293
214 Risk Score

Malware Insights

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

The PDF contains embedded links to known malicious redirector infrastructure, specifically `https://cctraff.ru/strik?utm_term=stand+and+deliver+movie+download+free`, which is indicative of phishing or malware distribution. The heuristic firings confirm the presence of malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious sites. The ML classifier and ClamAV detection further support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=stand+and+deliver+movie+download+free In PDF document text
    • https://zapirugitoz.weebly.com/uploads/1/3/4/5/134508168/xufudekaradagavi.pdfIn PDF document text
    • https://digafixi.weebly.com/uploads/1/3/0/7/130776371/vutuvijuvopevizife.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/685507.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_5f8754865d401.pdfIn PDF document text
    • https://kivuligob.weebly.com/uploads/1/3/0/8/130874143/3065786.pdfIn PDF document text
    • https://latavulepa.weebly.com/uploads/1/3/4/4/134461708/8027359.pdfIn PDF document text
    • https://zoniziwaxetoxa.weebly.com/uploads/1/3/4/4/134441104/a94f8e2ed5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371524/normal_5f884b9344b2c.pdfIn PDF document text
    • https://nowebapimigofok.weebly.com/uploads/1/3/4/3/134338607/9189391.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/jotizifime/19889657932.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/after_effect_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/axiomatic_set_theory_patrick_suppes.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/excel_2013_view_sheets_side_by_side.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/marieb_anatomy_and_physiology_lab_manual_key.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_off0000b5dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5DD 5132 bytes
SHA-256: 6ff1f0f5dc5089da646ff1b8d355ce4e993556019a05e4d3c8966fcf66a9817a
font_01_sfnt_off0000c752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC752 10708 bytes
SHA-256: 6194807d45af2f9922ee06ab2d5b6c737048e8ffb6812e1076bcc6835d4ab297

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