Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed1fcc3c1ce6f68…

MALICIOUS

PDF

77.0 KB Created: 2021-05-30 06:55:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 032819e9a59057f62b0988707f0da1f0 SHA-1: 236ca51673488ae157e7591b3879cf0a703bba30 SHA-256: 6ed1fcc3c1ce6f689f0a895e3214544db04dadaa1f155098f791eb3bf2fdbd1a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or SEO manipulation tactic. The primary URL, soxebez.ru, is likely a phishing or scam site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/strik?utm_term=raft+new+update+2021 PDF link annotation
    • https://fimupekegu.weebly.com/uploads/1/3/4/5/134502303/2350109.pdfIn PDF document text
    • https://wivikomale.weebly.com/uploads/1/3/2/7/132740486/titezanunezub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369630/normal_5feef21d71647.pdfIn PDF document text
    • https://nexevakef.weebly.com/uploads/1/3/5/3/135327015/nowatijonokaga.pdfIn PDF document text
    • https://pulivaxudifosaj.weebly.com/uploads/1/3/4/2/134235984/fojasopuguwanogofivo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_606c6a8ac3d6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_601abc19ad423.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423699/normal_5ff4dd9f408b5.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/1a14bf01-02ad-42fc-9508-92d7f8c65441/puruwabuvufufadoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc25b4a5-7016-4f6b-a7ee-84b44874c68a/roku_smart_soundbar_black_friday_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03da85fe-8612-4af9-ab8f-59a555c749b6/how_to_check_transmission_fluid_1995_ford_ranger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c006927d-3cdc-4d52-a3f6-b8a8a7962f72/city_of_glass_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b8c87f2-fcbd-49c6-9518-b2ddf0406de0/auto_electrical_wiring_symbols_and_meanings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78c18f6a-bea2-4a38-ad90-fc344aeca814/13035502948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89cba774-3428-4f8f-a5f1-b550f0f26217/fifty_shades_of_grey_music_playlist_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02294f7f-9c0c-4602-867f-2619ea5fe1c3/37485256627.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cacd2b9-3904-46ae-881e-165c9565ec13/fafud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cf0ecf3-d9eb-4988-ba6d-9b07a0cfa435/face_reading_book_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf0e35e8-1019-490a-9c6d-b99aa0da9e53/52119076514.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c476c7b9-117d-49b7-9a99-cb65a68caab8/learn_to_read_hangul_in_15_minutes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7214f532-b820-4879-964a-8189c280fa14/gadojaz.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_off0000ed22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED22 5156 bytes
SHA-256: 0757445fd251b98fdc8f76be28941aaddae283a332d7cf10c4c17bbc6ac3a687
font_01_sfnt_off0000fee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE5 11776 bytes
SHA-256: 81150fa29888075df887db7ad80cceb5f0d30ea539540f4a69e46cb9f510f9d8

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