Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e5f7afbf75f750…

MALICIOUS

PDF

65.4 KB Created: 2020-11-11 20:36:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a879306b35b1cfdc1d465808122162e3 SHA-1: 009a61809b9050e2c38d088a5da498967bae26f6 SHA-256: 72e5f7afbf75f750afd542f8b82092d061ab731a32c81fa66c372f0126ae2373
214 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics as a malicious redirector and link farm. It contains numerous embedded URLs pointing to external sites, with at least one identified as a known malicious redirector. The presence of these links suggests an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself is indicative of malicious intent.

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://traffking.ru/123?utm_term=detroit+to+chicago+car In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f91fc458ba48.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/6a7a00.pdfIn PDF document text
    • https://jajozopikikaju.weebly.com/uploads/1/3/4/3/134359408/0c87afe3071f58.pdfIn PDF document text
    • https://jipepusubame.weebly.com/uploads/1/3/4/0/134040653/ruzoduru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418185/normal_5f9a7aedde0c8.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/kezemiradigu/52602378350.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/reading_street_kindergarten_unit_1_week_1.pdfIn PDF document text
    • https://s3.amazonaws.com/fufaragebo/5695109535.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/vanejolugalulebise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/098a6eaf-b733-4b75-9621-de8779d53b6e/21548156502.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/tijepamazojijeluvilixu.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/nebolagovenozudavu.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_off0000c39d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC39D 4848 bytes
SHA-256: 77b26d1b9a809512e915173b59ceab957251b90407501ef3b845de3de42c10aa
font_01_sfnt_off0000d41d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD41D 10676 bytes
SHA-256: 84f5ce8516b7b208d34e2b36bcd095e248c112c63c96bbb6ff55140b0710ad4b

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