Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e2f08aa63bef37b…

MALICIOUS

PDF

64.6 KB Created: 2020-11-30 05:11:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: afb3df7d1cfc90fb4e852fb534c67edd SHA-1: dd8479d870d22b29534c2836336d618bfe1dfdf0 SHA-256: 4e2f08aa63bef37b96fd0cfa10a2ad4c6da9a2142649515289863c722ea54a84
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 at least one pointing to known malicious redirector infrastructure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect the user to malicious 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://ggtraff.ru/123?utm_term=construction+morphology+schemase In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416660/normal_5fa6ed5a16269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374196/normal_5f8b7056b6c78.pdfIn PDF document text
    • https://kizujaxaluw.weebly.com/uploads/1/3/4/3/134393650/6084715.pdfIn PDF document text
    • https://wazajodowefode.weebly.com/uploads/1/3/4/0/134017502/pumukakafeda-nejof-vasawomos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5faaa6b632269.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5f876209648b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380854/normal_5f8b1d8332865.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/toguvaju/barf_si_song_video_pagalworld.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0589e5b5-c316-49b8-b5c1-552e96a03d2e/95623303980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db2ff641-df64-4a97-8e68-24ec75fa83be/1000_tattoos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc3dbeeb-f842-488e-a781-a9c7971e6bb8/malipo.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_off0000c0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0DA 5352 bytes
SHA-256: a2e968a2a92f099c97f7c75b4ac673bf63eca530d857286439f2c98b168b3342
font_01_sfnt_off0000d2e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E7 10192 bytes
SHA-256: cdff3df2612631ed80cf39a8168cd4fb7fd23dad3f7c99a357f309440a5a1859

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