Malicious PDF — malware analysis report

Static analysis result for SHA-256 816aa32137aea675…

MALICIOUS

PDF

59.4 KB Created: 2020-11-21 19:41:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a394b286ccb68a0227e6403b4a1b18ca SHA-1: ec60270c24a8544f1f68274c5ede80df554362ef SHA-256: 816aa32137aea675c1f5d5f6c8229c00f3c964afcff1475354d9d7251d041789
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The PDF contains a large number of external links, indicating a link farm or SEO manipulation tactic. One of the primary external links points to a Weebly hosted PDF, suggesting a potential distribution point for further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/123?utm_term=hyperx+cloud+core+manual PDF link annotation
    • https://digafixi.weebly.com/uploads/1/3/0/7/130776371/bezak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455196/normal_5fa56ee282d9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473642/normal_5fa9c0e379470.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444655/normal_5f9e20ffbac6a.pdfIn PDF document text
    • https://bezoduremudopez.weebly.com/uploads/1/3/1/4/131437412/3875738.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_5f8aec352749c.pdfIn PDF document text
    • https://lonunibulitog.weebly.com/uploads/1/3/4/4/134498578/wigofuwoxawux_vatixizazemu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453100/normal_5fa396e056ada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402949/normal_5fadf871c9ff5.pdfIn PDF document text
    • https://xonelaxag.weebly.com/uploads/1/3/4/7/134705152/bejadorunilarokadita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375896/normal_5f9c2c07a8fe7.pdfIn PDF document text
    • https://vumufivazoxowe.weebly.com/uploads/1/3/4/4/134467728/jilubadufinosafiru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/47bb98f2-1f68-47b6-8fea-69a72007aa9e/pudupusetobex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5122cfb1-4a0c-4362-961a-272d5ba39862/bosizedubevox.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_off0000b0d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0D7 5172 bytes
SHA-256: 9297efd73a16faf9ec5fb3754dfc76de29cc62ac40d497e0d8c0e1fbfabbd29a
font_01_sfnt_off0000c25b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC25B 9128 bytes
SHA-256: 8e17132a0d62e8ee0093d3fbeda663f59e71c5fb41533a5fa9f61bb2423c5101

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