Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ca3fbbfac09266…

MALICIOUS

PDF

73.2 KB Created: 2021-03-08 17:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1975aa4e4fa109730c5ca14c9097bf63 SHA-1: be74e4bae482b006e2d72a2490a2ec11059fed6a SHA-256: 97ca3fbbfac09266a9867a64c45d5bcd246fe73ef3843fb64adf5fce9cf51989
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically 'https://xezojetit.ru/123?utm_term=where+would+bartering+income+be+reported'. The document body, though heavily obfuscated, contains text fragments that suggest a phishing lure related to income reporting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or credential harvesting.

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
  • 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://xezojetit.ru/123?utm_term=where+would+bartering+income+be+reported PDF link annotation
    • https://cdn.sqhk.co/fuwegamuvev/id0HVGV/powisutamojonewezeju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463533/normal_601ed8eb20d52.pdfIn PDF document text
    • https://cdn.sqhk.co/subesanodag/f1mYiim/flight_status_sfo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446264/normal_5fc70dd0012b9.pdfIn PDF document text
    • http://detonicufficiale.website/lilanesenipuvoxifazabamcgzr.pdfIn PDF document text
    • https://cdn.sqhk.co/givesaxi/MXXhi9D/gebubunaxoru.pdfIn PDF document text
    • http://lewijufe.sportsontheweb.net/spider_v_240hc_review.pdfIn PDF document text
    • http://kanshoper.site/33169861198kxirg.pdfIn PDF document text
    • https://cdn.sqhk.co/dufolatik/hjgmoid/80_s_hard_rock_music_videos.pdfIn PDF document text
    • http://sigisuzuk.getenjoyment.net/70670449691.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rujidafedisezu.atwebpages.com/92486250357.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/abs_workout_program.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/7611315028.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e126976-079f-40d5-a01d-8744fb87948f/the_story_of_orpheus_and_eurydice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c8c0226-2902-440d-abc0-03ca7bd4faf7/2000_honda_shadow_vt1100_review.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/xedinenilesopoxofusib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a6d4550-5f16-47f8-adc5-d528f507360f/xujoxebebizofomajubaguz.pdfIn PDF document text
    • http://zasuwunal.myartsonline.com/46239312460.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/agrarian_reform_in_the_philippines_slideshare.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/24187155480.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef332f0b-76ab-4885-ae98-6b9e6c888482/zumuzogumebegolanireril.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_off0000e127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE127 5552 bytes
SHA-256: 86873045c023a6922685bc5fdb3a257dbfe36682bfc7a39f7ecad008dbfc698c
font_01_sfnt_off0000f3f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F5 10540 bytes
SHA-256: 9ddf9226480760aee62ca04402978a5e74d2f96c7a17a6563992825a40b9cfc7

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