Malicious PDF — malware analysis report

Static analysis result for SHA-256 4153f017b9f9a7d6…

MALICIOUS

PDF

75.0 KB Created: 2021-01-14 13:52:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0727538272c189d6d06616b158ae9042 SHA-1: cc180fcebaf59c5408398d8ae104f0fc9901cc5e SHA-256: 4153f017b9f9a7d62caabf8c03d4fb8836959ea3a89d367521b3edbd859a2d75
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing attempt. The document body, though truncated, suggests a lure related to a 'Centerpoint Houston report power outage'. The embedded URL 'https://trafftec.ru/aws?utm_term=centerpoint+houston+report+power+outage' likely leads to a malicious site designed to exploit the user's interest in the report. No scripts were extracted, but the presence of external URIs and the phishing lure strongly suggest an attempt to redirect the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://trafftec.ru/aws?utm_term=centerpoint+houston+report+power+outage PDF link annotation
    • https://jubiporosevuzu.weebly.com/uploads/1/3/2/6/132695682/2823836.pdfIn PDF document text
    • https://femekeviwafuga.weebly.com/uploads/1/3/4/3/134345727/kinonuvilivowan.pdfIn PDF document text
    • https://degumikiw.weebly.com/uploads/1/3/4/7/134724061/tavajoresu_texoku_suxepamix_nakukafa.pdfIn PDF document text
    • https://webakutukulufu.weebly.com/uploads/1/3/2/6/132683024/vopusojugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408170/normal_5fb9df96d7ba1.pdfIn PDF document text
    • https://bewodopogogubak.weebly.com/uploads/1/3/4/8/134886142/kusalefobofumikituf.pdfIn PDF document text
    • https://cdn.sqhk.co/kinifukix/gIMpEgd/food_nutrition_and_health_degree_jobs.pdfIn PDF document text
    • https://bisigategisabuv.weebly.com/uploads/1/3/4/8/134884720/1124553.pdfIn PDF document text
    • https://basuxebuj.weebly.com/uploads/1/3/1/3/131379820/pukelemo_virujiwufob_wepop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA2 5048 bytes
SHA-256: 1f00078943602813c43922b5f99bc9982df9a862764d56f95acdc1a5e9fb2315
font_01_sfnt_off0000edd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD4 10288 bytes
SHA-256: dc40b60aee3563c77817a937625cc0e16edaf687a85ad944815a46ef3ad1c43b
font_02_sfnt_off0001111f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1111F 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34