Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b912e34a64b60e3…

MALICIOUS

PDF

67.9 KB Created: 2020-11-24 05:54:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6bc92d70bef674fdced9476724bdd4af SHA-1: cac0fa1b1ba6711fea5bdd8106deb7834bc7fa5d SHA-256: 8b912e34a64b60e3af64cc04adaccd619b2d5f600622049809958bdd87c9ca9d
154 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link that attempts to lure the user to a phishing site. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is the primary indicator of compromise, suggesting a phishing attack disguised as an enrollment form.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/123?utm_term=vsp+enrollment+form+with+dependent+data In PDF document text
    • https://cdn-cms.f-static.net/uploads/4412154/normal_5fb25a20e84d3.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/juletul_wotuj_fujaduzoraguf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391909/normal_5fb961492740b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f8872bfd030d.pdfIn PDF document text
    • https://nodarato.weebly.com/uploads/1/3/4/4/134487471/jibiva.pdfIn PDF document text
    • https://lesavudipuvu.weebly.com/uploads/1/3/4/3/134338744/visuzab_fomajekotila_lixibexuwop.pdfIn PDF document text
    • https://besogedawifajop.weebly.com/uploads/1/3/4/2/134234635/2784643.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471704/normal_5faf721129a24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369168/normal_5f8b5f93e5ddb.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/lefemijip/baja_california_norte_mapa.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/79063518147.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/pronoun_antecedent_agreement_quiz_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/91953014870.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/pojiwiwomiloduzitip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a600afbb-5128-4682-b628-0c12d070ffd5/precalculus_blitzer_5th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af60bf62-e8a7-461b-8da6-7c035c96e613/wawoxuxifu.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_off0000cc60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC60 5340 bytes
SHA-256: a00742664c636234492daf96ccbab3c17f10468faadbf5b03b9d184322f433b3
font_01_sfnt_off0000de6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6F 10840 bytes
SHA-256: a6cb64670783af24f76bf4f76eb2f2ba5154482455d9d98ddc3a5414c4d75019

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