Malicious PDF — malware analysis report

Static analysis result for SHA-256 73caad8282b6b341…

MALICIOUS

PDF

72.3 KB Created: 2021-01-29 10:58:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f5cc7f0c76fbf5bb87feb53b698bf3af SHA-1: a757dbab29c5a4bbeeb20be8c4d18dd1db5d1e70 SHA-256: 73caad8282b6b341b2944579cd9243b746a8912a961e89c8bb0275018cc1e378
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-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://jacksth.ru/aws?utm_term=cake+shop+2++softonic PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370266/normal_5ffc5c05e93c8.pdfIn PDF document text
    • http://detobusukited.iblogger.org/saucony_women_s_guide_10_running_shoes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409799/normal_5feee15583b69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5fda54c32d252.pdfIn PDF document text
    • https://cdn.sqhk.co/tupipitijil/whjuSib/truck_driver_cargo_old_version.pdfIn PDF document text
    • https://cdn.sqhk.co/risubibasero/6jjFZjj/briefing_paper_template_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/pomorezolo/gjgghbw/scarfall_the_royale_combat_download_uptodown.pdfIn PDF document text
    • http://vadusulu.iblogger.org/gudixizubawagupa.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/kaxukok/72102294194.pdfIn PDF document text
    • http://totofexux.epizy.com/binulukebas.pdfIn PDF document text
    • http://voxotili.epizy.com/vukuwugilevofulis.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/new_hotstar_app_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/borana_culture.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/53630101816.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/55407176132.pdfIn PDF document text
    • http://xipitidugizen.rf.gd/android_version_10_names.pdfIn PDF document text
    • https://s3.amazonaws.com/xomudufe/free_commercial_invoice_template_excel.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_off0000dac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC8 5076 bytes
SHA-256: efda428205904e32381ee9a66b13ca3326150d81e6bd72c335b3148c43463bf6
font_01_sfnt_off0000ec18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC18 11820 bytes
SHA-256: b0e9c1a379318842de6f3fdc1c839f889ae4f822bbf140421aef3e86633d77b6