Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a3ec602d7ec638…

MALICIOUS

PDF

64.4 KB Created: 2020-11-22 02:00:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4a99179b3e855f3dde977aa551856082 SHA-1: 939ef950e5714f41e3dcea333099c06b647b4ecc SHA-256: a9a3ec602d7ec638fa4c9cc9330ce801607a1cc91e4f64b9941069ffd7e61374
156 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 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 0.9994

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
  • 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://traffking.ru/aws?utm_term=pooja+kare+aghori+shiv+ki+video PDF link annotation
    • https://fakimodixoto.weebly.com/uploads/1/3/0/7/130739088/novenokifujivo.pdfIn PDF document text
    • https://tipozuroboga.weebly.com/uploads/1/3/4/2/134265922/3060432.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/tudawufed/oracle_fusion_applications_implementation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/metapiluseja.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/zafojufidoxuritowojizaw.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/tewuneke.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/99123467793.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/senderos_1_spanish_practice_workbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/name_of_sc_oh_3.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/selejufesojovejiwurixajig.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/dadetosojejujofulodez.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/25992301947.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_off0000bd47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD47 5256 bytes
SHA-256: 0f115125ced0b6edf5ff1938a6ca2605febf73d397a8ed78179d485bf8f883c6
font_01_sfnt_off0000cf31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF31 11460 bytes
SHA-256: a08c89d36baa750831c8ca2f64ba1b29b481028c9643538cd53bd61195f3435b

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