Malicious PDF — malware analysis report

Static analysis result for SHA-256 26c7dc7f29044b62…

MALICIOUS

PDF

77.2 KB Created: 2021-03-13 19:13:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 33e5fc7d194841c741d1f8605e804081 SHA-1: 77501af982ea132863f231a22f8127737e0f2ae2 SHA-256: 26c7dc7f29044b62c3b76f95641b789f3b406c0581c6ad352e16ab4572dcfcee
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO poisoning or distributing malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via the embedded URLs. While no scripts were explicitly extracted, the PDF structure and URL farm suggest it's designed to redirect users to potentially harmful sites.

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://fokemale.ru/wix?keyword=islam+empire+of+faith+movie+worksheet PDF link annotation
    • http://kixurox.getenjoyment.net/gawufibokutuxofed.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/jcOaLjh/putijujagidi.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/boHDOp8/metropcs_phone_number_closest_to_me.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/toro_20339_parts.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/iRNAwqo/latojegomuzi.pdfIn PDF document text
    • http://forisawidokomor.sportsontheweb.net/multivariate_gamma_distribution.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/e74728c4-63dd-44d1-9583-e702871939b6/12_week_strength_and_conditioning_program_mma.pdfIn PDF document text
    • https://d38713d8-f9e0-49bf-8e72-3f46774ce551.filesusr.com/ugd/b3faf5_1be10496ea554f8d8a6a23519c23a749.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sefipa/lakelaromozugefibeleren.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/quote_tracker_excel_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1063e012-9f85-416c-b597-f7d2c5506c2b/cheap_dirt_bike_helmets_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/nezisarafukopeki.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/xaveforupewavoxafitut.pdfIn PDF document text
    • https://43081b45-6e48-4b43-b724-9328fda377ae.filesusr.com/ugd/26481d_5a4fdc269c264bec92ed6a994fc84e3f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sinadi/game_implosion_never_lose_hope_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/actress_full_hd_photos.pdfIn PDF document text
    • https://7c8f45b7-e058-4e27-bccd-8ee7dcb26900.filesusr.com/ugd/d5cf39_d295abdaa454401b89b9b3a3019c7442.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sebunuzu/83427549649.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cbf665c-2d0f-4ad0-8fad-e8e43349e0df/genie_wireless_keypad_model_gk-r.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b6712ed-f450-427c-8f33-786d231a1a1d/how_to_play_johnny_b_goode_on_guitar_easy.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_off0000f225.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF225 5292 bytes
SHA-256: 7987bed16332455b8b8f8e030cd18bc57337c1e61c9885087c68cae5304d224a
font_01_sfnt_off0001040d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1040D 10488 bytes
SHA-256: 305545ea7b99a195d916477999dbd8cef9b9b1749ec4a9cbc88d59e94ed39661

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