Malicious PDF — malware analysis report

Static analysis result for SHA-256 b440afb8c4283f8a…

MALICIOUS

PDF

80.4 KB Created: 2021-03-22 07:17:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2f4554c84c9755aefe8c636796e6501a SHA-1: d1f592368b50ba6d2b867a60c8d4585f068e09ae SHA-256: b440afb8c4283f8a09cb3f1b7f61687256973b1521ecd1be62b6ca009e6fcf96
96 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. 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-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://botokaw.ru/wix?keyword=la+granja+del+dr+frankenstein+opiniones PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389805/normal_601de1f50e7bf.pdfIn PDF document text
    • http://kopuvimu.scienceontheweb.net/what_does_osi_stand_for_in_the_military.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374700/normal_601f20d6e2cd4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484364/normal_5ff785c191e78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382190/normal_5ff24cc337c67.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453338/normal_5fff08e023a48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468837/normal_5fd72f73501b8.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/musokejixami/pokadijoxerunasonuro.pdfIn PDF document text
    • http://silabigajevova.epizy.com/what_are_the_4_steps_to_recovery_and_treatment_for_alcoholics.pdfIn PDF document text
    • http://fuguzametekobo.myartsonline.com/benejulozip.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/58115049412.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f03e8f9c-8587-4234-a415-c4b79d77ab4c/lawasuvijadunezagupidolad.pdfIn PDF document text
    • http://wigazimo.epizy.com/suvejadaxup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1eaefb9e-a577-48f4-aaf7-1a15b88ffe27/how_to_reset_the_oil_life_on_a_2006_honda_civic.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/20091463172.pdfIn PDF document text
    • http://desovizipelo.onlinewebshop.net/99603818270.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a8cf5de-e532-4947-a20b-31a29d5aac03/jebekulinujeko.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/gedutozinibezenetidexixil.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/a_level_biology_aqa_revision_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a0d81c3-122b-4830-bb15-8802598af33f/penny_stocks_to_watch_dec_2020.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_off0000fb9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB9D 5292 bytes
SHA-256: c572cff3e90c190d7139ddbc22063e99c4e440ecd4da8894c6f3ea19c5d42b80
font_01_sfnt_off00010dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DBB 11880 bytes
SHA-256: 808be8c61352738dac4ce5679198824c112755f75d3043404f7787c9d9977101

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