Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c87fe847ce4112a…

MALICIOUS

PDF

64.6 KB Created: 2020-12-10 17:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7b32a35528169ce34bfb7695ffcc18ca SHA-1: 10cadfc06dbda4c55863079dc64eb6099cb1c229 SHA-256: 8c87fe847ce4112a897102ba80b1471635928a6aa74b3c162f75a113fab5aa8c
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafffe.ru/strik?utm_term=wifi+settings+apk PDF link annotation
    • https://waziketezu.weebly.com/uploads/1/3/4/6/134648841/f1d896e2461.pdfIn PDF document text
    • https://bemogipe.weebly.com/uploads/1/3/4/3/134379528/betodifenaf-bulixebegaxivaz-zepexam-nusovuvofivapo.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/jukezeluf/betezifozokeriruromemu.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/labovefikugepilub.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/34937519738.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/android_games_cracked_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88a1d923-fb69-44ed-ad0a-11dbdcd4c74c/to_ride_a_silver_broom_stick.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/antonyms_worksheets_for_grade_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcdc9621-04b5-418f-88e1-fc141fd1fc0a/boy_uzatma_forml_kitab_indir_cretsiz.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/95210118066.pdfIn PDF document text
    • https://s3.amazonaws.com/lezerawe/44854522491.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD3B 5020 bytes
SHA-256: 5e7b988b217b0f6c684e4ff13f852335364dfe7b7a5dc981a963d16145bd8690
font_01_sfnt_off0000ce84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE84 11824 bytes
SHA-256: 07fd21c03261c5fb9a9f1802be34b3bdfaaf222f44c1fd2652f0cc1795f8c57c

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