Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa71e4bc0be8aeaa…

MALICIOUS

PDF

68.0 KB Created: 2020-11-10 00:46:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 035c68c3df346e071d23b3f461649b7b SHA-1: bda4fa5db9458f69c9fabac4ff0e172363118411 SHA-256: aa71e4bc0be8aeaa168116714118eb00c15a565e10ecf87d142a12de4c097e8b
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The embedded URL `https://traffmen.ru/strik?keyword=dark+angel+tv+show+streaming` suggests a phishing or scam attempt, likely disguised as content related to streaming services. The ML classifier and ClamAV detection further support its malicious nature, indicating it's likely a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/strik?keyword=dark+angel+tv+show+streaming In PDF document text
    • https://senobatupubem.weebly.com/uploads/1/3/1/4/131437889/vubabira-bajege-majiji-zabok.pdfIn PDF document text
    • https://sijevunima.weebly.com/uploads/1/3/1/8/131859613/kasatisi_vetetipedimix_pudulajelitu.pdfIn PDF document text
    • https://kuzaloxamuw.weebly.com/uploads/1/3/1/4/131406684/b6ae6c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451035/normal_5f9ee52d77363.pdfIn PDF document text
    • https://firebawoba.weebly.com/uploads/1/3/4/6/134659507/sisigijowa-lobes.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/kadijamiruvinugeno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_5f98e53da3864.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/74b82333-4b9b-441b-b90e-adfc9889e3d2/how_do_i_get_rid_of_my_lawn_full_of_weeds_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db7f5bb1-4b4c-403e-896a-619fedb3ee45/34505296105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89a545b7-520d-44d7-af94-423d52c143be/sdgoodwill_job_search.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e6bf965-a133-40bf-bda5-2374c317a41b/54553676940.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_off0000cd51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD51 5316 bytes
SHA-256: ccbd7c53df4b06673f4e0ad688f7bc22cc40c234846897483d4261325124b321
font_01_sfnt_off0000df5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5D 10596 bytes
SHA-256: 4224f6b9152ec498d9e53a37aec844552306de7d07c1061d677f55caec8e007b

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