Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a321ef3e00e5fbe…

MALICIOUS

PDF

63.9 KB Created: 2020-11-26 02:51:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: cf812c562d178a549c7671e44c72ee30 SHA-1: 82c5d3fc9e3ed750a1b9761ad8c59d37f111da29 SHA-256: 1a321ef3e00e5fbe8707dcd53ab0dee2f0e3fd0b8455e22d86964362aba619b7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URL that redirects to a suspicious domain, likely to deliver a malicious payload or phish for credentials. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references to 'Forge of Empires apk' and the authoring application, suggesting a lure to download a fake game or application.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffset.ru/strik?utm_term=forge+of+empires+apk PDF link annotation
    • https://xomevore.weebly.com/uploads/1/3/4/3/134346529/dasolivumodebi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393018/normal_5f92073a7df02.pdfIn PDF document text
    • https://bopifodefow.weebly.com/uploads/1/3/4/3/134383970/9831514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378857/normal_5f8dbbd9b5720.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478378/normal_5fb54f148167b.pdfIn PDF document text
    • https://katolafafesol.weebly.com/uploads/1/3/4/4/134479470/5231426.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370780/normal_5f966e004324e.pdfIn PDF document text
    • https://megivewoza.weebly.com/uploads/1/3/4/8/134859273/kelozipur_fugasisifufuba_mevimeludifudu_foredaxa.pdfIn PDF document text
    • https://dunufofobepo.weebly.com/uploads/1/3/4/3/134380723/dubozaror.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/subud/75787712535.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/vlookup_excel_in_2_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/26032673677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a428d01-da34-42f3-9a10-4f4f538cf5c8/54912767358.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/92664857418.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/adjetivos_para_describir_personas_en_frances.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d136e0bc-4cdf-4416-b472-e8e19dd35e12/kebam.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_off0000be1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE1D 5208 bytes
SHA-256: 30522e2b261e4d93e51313a9ddadd50783dc6f321d23598acdab46e42148ec6c
font_01_sfnt_off0000cfd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD0 10248 bytes
SHA-256: dcf1a4d2af2474c93bb9582ad5ca8bb27d931a56e7d30e8eee602a2e4714ac62

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