Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea513f80e9f878b…

MALICIOUS

PDF

59.0 KB Created: 2020-12-05 10:00:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ae2162ee4215018f575d9dbc8225d77d SHA-1: d87c756c6c1c7bda89ea842f4ce0c15aa1dcccb1 SHA-256: eea513f80e9f878bb71fc8894a1d7ff0acc8664c1534e3335c74800db041863c
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://trafffi.ru/strik?utm_term=physics+semester+1+exam+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376380/normal_5fc3061964058.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/d4462e74-b59a-4e12-ae20-2e61286d70b6/nizazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c277e771-139a-44d3-90b7-c64eedce5afd/39617568668.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc169f3e2fce462bc8f8ca6/t/5fc2896ce6d49a06bbe4ee46/1606584686145/widurogaforivaxotam.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/gogixajuwonog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d53229c4-0338-43ee-a75f-781f6f8e7dee/ssl_9000j_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b36cbc8-52c9-47a3-98ff-b42cbf47e44e/rodedulomov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/124cc873-e36d-4935-ad84-6eaeed50a25e/jesuvak.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/kofofixo.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_off0000aad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAD1 5324 bytes
SHA-256: 558e5b01b53c9e200293fd74a875ebbc072959603aac10c2c54d857885eb7d37
font_01_sfnt_off0000bcde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCDE 10348 bytes
SHA-256: e5e170b94697f6557b40f7a88fe0ed770b6da4d3cd9163f8ed53954b7938072c

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