Malicious PDF — malware analysis report

Static analysis result for SHA-256 fba95e6557026c5d…

MALICIOUS

PDF

72.9 KB Created: 2020-11-10 07:24:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 721e1de8434c7c4a5a1daff18287e22e SHA-1: 7c438f4f1f12a7cd9818f9ccc7525f249ecfb01f SHA-256: fba95e6557026c5db756298335168b600f654586ff6021916f571816716d19fe
214 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, with at least one pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the high ML score strongly indicate malicious intent. The document body, though partially obfuscated, suggests a lure related to the 'Issa conference 2020', likely to trick users into visiting malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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.
  • 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/123?keyword=issa+conference+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411503/normal_5fa162ed9e832.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_5f8902ff2339a.pdfIn PDF document text
    • https://vibikawezawu.weebly.com/uploads/1/3/4/7/134734059/4608f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374009/normal_5f983b42d2c46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473031/normal_5fa9b585524cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427781/normal_5fa3c6617555b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426558/normal_5f99ee9571b03.pdfIn PDF document text
    • https://neriborotarisim.weebly.com/uploads/1/3/4/3/134345051/33d69807.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
    • https://uploads.strikinglycdn.com/files/9db93a55-b33a-4872-b69f-80154679af17/tifawagevinamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/704f3e86-3c79-45e0-8c1a-4b2f7aff1bb1/all_of_the_following_statements_regarding_liabilities_are_true_except.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8096ec9c-e283-4dfd-96a4-f2898936fed4/45740581414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b53ac96c-4bde-47de-9875-88ddf9122297/95309685241.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22fe993d-7edb-459a-b221-d5e5cb01981b/nonixibujefakizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8be82803-2951-4737-afef-80b0b0750077/cookworks_signature_espresso_maker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c8404bb-00b2-439b-a986-cad239e048c9/champion_public_library_ardmore_ok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ee370f4-d393-43ba-b5f5-e453162361fa/bekifej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5cdd570-c95a-4544-8b34-b8029b66566d/piazzolla_histoire_du_tango.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d34e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD34E 4712 bytes
SHA-256: c723bdecebbc3e8bb5edc5d6af911f2e951338cda3cb3bfdde5c55438cace7b9
font_01_sfnt_off0000e33a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE33A 10940 bytes
SHA-256: 28e7cca0c6c4ce89731a7034f4f7e3abd65a263b63933621734b35e6739a84cb
font_02_sfnt_off0001088b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1088B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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