Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af39a4b5643a5d2…

MALICIOUS

PDF

72.8 KB Created: 2020-12-26 02:23:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 35e9710800f7413b7a10962926a2080e SHA-1: 7e3aa84dd8a23af0d3b7e908b134fd89eecf7534 SHA-256: 0af39a4b5643a5d2b5d38574e9a0feddb214f5578d420d19fc6ae8689997604b
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to potentially malicious redirectors, disguised with a wedding invitation theme. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the embedded links are the primary attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gettraff.ru/aws?utm_term=wedding+invitation+card+template+doc In PDF document text
    • https://cdn.sqhk.co/naritiba/Ddgjtja/naromuwal.pdfIn PDF document text
    • https://jutisopi.weebly.com/uploads/1/3/4/7/134775863/8557433.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5fc2569f72aac.pdfIn PDF document text
    • https://jezaxegare.weebly.com/uploads/1/3/1/3/131380636/ripejolil.pdfIn PDF document text
    • https://cdn.sqhk.co/gusorewiwal/RGgiJe6/idle_factory_tycoon_download_pc.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/zesotat/charta_der_vielfalt_logo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9a11b13-8e75-42ef-ae0c-6a31ecbb62c0/rapixabomira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04349fed-7152-4fb4-8212-6bed58242f14/mobimeet.ru__java.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c71147e3-e528-401f-b8f7-99ddb7df391d/jay_ajayi_rotoworld_outlook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/306c2538-92c9-46ff-bfc4-4d87ac1dda83/33786548659.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_off0000e0c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C9 5288 bytes
SHA-256: 2cfad9ba3c0a23a69194998fdc5df9b850f2fb2fdd404c2adeb3f513a967bbbf
font_01_sfnt_off0000f2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C4 10488 bytes
SHA-256: d9f577c486f8a6f02c8be477dcd7334bd0d81ec3f89c31cf61f7dc6c122ca214

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