Malicious PDF — malware analysis report

Static analysis result for SHA-256 9505305b29e40c40…

MALICIOUS

PDF

69.3 KB Created: 2020-11-16 19:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: abca3c83eb7f475109b19c18477d0486 SHA-1: 9bd397741e8974b354854ac1c2d3fa08cade334e SHA-256: 9505305b29e40c400c666ab084d2d58cc025025a940bd00ce6667c5fa43f7bc7
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/strik?utm_term=and+gate+with+nand+gates PDF link annotation
    • https://leruzifu.weebly.com/uploads/1/3/2/3/132302941/8041904.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416136/normal_5fa6ef7e3b9f4.pdfIn PDF document text
    • https://fewaxozane.weebly.com/uploads/1/3/4/3/134341296/lapixexukom-pemenidite-todubuwi.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/9543927.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/cf4e18f6-a6bd-4ead-b6de-e1ee6852ab10/organic_compounds_concept_map_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e814afa-437b-42bc-9f01-08efff057d1a/husband_coached_childbirth_ebook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75996448-5184-45f7-b3a0-947a89ae9710/queilite_angulaire_dficience_vitami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8d1d524-bed4-4155-b66e-0ff82f544f92/femajilutezitemi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52912b59-3da8-4f3c-af0d-29a9c325637a/night_film_pessl.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60ad401a-a849-4a4f-92d2-bfb01bcc8a04/expert_python_programming_3rd_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8efb8943-0d6b-4f3f-925b-9a800792950d/mass_effect_3_gameplay.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_off0000d01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD01C 5040 bytes
SHA-256: a38fcb179280120a8f960e54679dd974289429bb2124d6e769244cc5a2d9f5c1
font_01_sfnt_off0000e158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE158 11524 bytes
SHA-256: 15de26a7f0918cee4cad3a843cfcd39c900a33c36a82069322c96c0e9eb0b5cc