Malicious PDF — malware analysis report

Static analysis result for SHA-256 a198bf70a98dc0fc…

MALICIOUS

PDF

63.6 KB Created: 2020-11-25 15:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d72f36b0211336a00a037fb363155b83 SHA-1: b23ec48c1fb2c74c8bb33b8198fc96a4f78e0893 SHA-256: a198bf70a98dc0fc12b6a40bb7415a04666549a8105b5ee5443bd7b4bdd9f745
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 0.9997

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://traffking.ru/strik?utm_term=ap+statistics+chapter+7+review+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386595/normal_5f8df7c1a5ae8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417222/normal_5f9c6aab4d0e4.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/ee8e9f9d-4647-453c-a956-446206c7fbff/44818050042.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8c8cbf0-4ad6-48b6-8f16-c5ad7cd0153b/3325179760.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/guided_journaling_for_anxiety.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/90078148492.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3668f168-1de7-44cf-8911-db30af56add0/rutenifutez.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/leiocephalus_personatus_caresheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68245ada-b567-482c-ab24-2c543cf8d18b/potutagitimeromomejupo.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/45760866933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a91b596a-9ffa-4acb-9ed5-d4c2a68782e9/7936982223.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/61333181048.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/business_newsletter_templates_word_free.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_off0000ba04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA04 5208 bytes
SHA-256: 4452cad748229449dd157995ba5c14a5cbc89cfd81c6812c58c0240e5044fc32
font_01_sfnt_off0000cbd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD1 10804 bytes
SHA-256: fc8d61fa580e1615a000c185641c1d6100181b8ec0dba941b0319b9bab96c80c