Malicious PDF — malware analysis report

Static analysis result for SHA-256 538a5228a6339d40…

MALICIOUS

PDF

62.2 KB Created: 2020-11-19 10:12:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e1ac66e523b34e9b242e7bb1f0743c47 SHA-1: 2f5704bd56f93db2159cad42c40a0277ef32668c SHA-256: 538a5228a6339d40fdde8d3f12c1040fc2bc512d7bf37758af72543be75f143d
96 Risk Score

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. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/123?utm_term=pregnant+from+precum+odds+reddit PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/justice_of_the_peace_bexar_county_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/94761043405.pdfIn PDF document text
    • https://s3.amazonaws.com/degerutisig/34462125615.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/84078382159.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/henry_krieger_coble_nfl_news.pdfIn PDF document text
    • https://s3.amazonaws.com/guvovigo/wogapijedikax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2642d44c-8ce1-45aa-a1c5-8a21d74c9180/the_complete_christian_guide_to_understanding_homosexuality.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff129c83-d7e2-467c-b70a-4689094b9f9e/como_se_escribe_97_en_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/14376056638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ec9d3f1-6a93-4844-98dc-7058b7ba2c25/21566085393.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/tifetamixolamikilaza.pdfIn PDF document text
    • https://s3.amazonaws.com/vofosuvuwapiwo/5e_paladin_oaths_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58230fce-b4a7-4144-ba04-c6649e1096f8/deedan_10_episodes.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_off0000b86b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB86B 5444 bytes
SHA-256: 1f3edecb1beaad6a4de1cbd1ccdeeaba70056d872259b5def8bab597aea904ba
font_01_sfnt_off0000cad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAD9 9788 bytes
SHA-256: 51e340f229022b885767a0072b9ba7c1fe57314d45d1dfc2c1d1c006a5a9d102