Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc4ae8bda8bfbb8…

MALICIOUS

PDF

78.1 KB Created: 2021-05-31 02:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 560ed1a22f4706f86aba75e5894528a7 SHA-1: 203d9f0cb892b541ce78be4cbefae42d3ce7a762 SHA-256: 2cc4ae8bda8bfbb8d72eaaa27395be84bbf133a3611de72185abff2d54b4c491
156 Risk Score

Malware Insights

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

The PDF contains a heuristic indicating a mass external link farm and is flagged by ClamAV as a phishing trojan. The embedded URL, 'https://maypoin.ru/strik?utm_term=berry+dazzle+crape+myrtle+for+sale', is likely the primary lure. Although no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/strik?utm_term=berry+dazzle+crape+myrtle+for+sale PDF link annotation
    • https://fimibiwuru.weebly.com/uploads/1/3/2/6/132696060/kamexujofedusiz_jifemepadif_dilobezakov.pdfIn PDF document text
    • https://nufazuxumojo.weebly.com/uploads/1/3/2/8/132815750/4ae1d6676a78.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/a895c034-f5a5-4dec-a176-db39825c25ff/82402597407.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81585bcb-205f-4284-b270-2dd7ef214e4a/64909370874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a8de6c2-f5c2-495e-8ebe-1632b64561f0/denon_avr_1910_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05ab789a-46de-4926-a6eb-30390c665962/2000_skyline_nomad_travel_trailer_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1a5b94-95ab-4c6b-bea3-dd7f9b36d4d6/90617121543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4a75544-ed50-4081-8250-980a19635129/training_methods_of_72_arts_of_shaolin_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4df2dd4c-b063-4f61-9efa-d49fd36f6395/tirutun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b1dd786-d2d2-4a05-b2f1-5bee8ed07099/aprenda_ingles_escuchando_este_audio_milagroso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63669182-a4b9-40dd-8b1c-5e6a988cf774/butterball_turkey_fryer_xl_how_much_oil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5342d80d-8508-4e3c-a248-f67a56b368c3/28919238198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e492e53-db78-4cb7-ab6d-421051956c30/8836170198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4d90399-2c08-485e-a3f5-88cc536f2e1b/xuvenixadowipajow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a550ca-352b-47b5-97f4-6ce9aa986a2a/zuwokabedulalosu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da8a22f5-d2e3-46ff-94b0-4b147a9100e9/genesis_v2100_bike_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daac6d7a-fea6-4096-b56a-cca371deeb77/how_to_use_broil_on_thermador_oven.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_off0000f12d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12D 5500 bytes
SHA-256: 9c6996fd3bfc4adccd726d76cfaa08883aecd3de152d01954470948d7f189239
font_01_sfnt_off000103e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E7 11644 bytes
SHA-256: a5a1f20971b738012c83a6373206d4b79caf7981c7c2ad26ee0029a8ae4cf73c

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