Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0a02a96541f4422…

MALICIOUS

PDF

81.7 KB Created: 2021-05-21 15:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 608d8c6dd6d5831d76b8af2b37776c6a SHA-1: 7b479ecc562f6506ef85a4845ec16512499bff97 SHA-256: d0a02a96541f4422acf2d4da6ab41356eb56811f6d12a85eb99c93d39b2b500a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain ('ponafet.ru') and a query parameter suggesting a lure related to 'Best Buy Geek Squad protection laptop'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a malicious intent to distribute content or redirect users. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. While no scripts were explicitly extracted, the presence of external links and the phishing lure strongly suggest a malicious document, likely delivered via spearphishing.

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://ponafet.ru/strik?utm_term=best+buy+geek+squad+protection+laptop PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492575/normal_5fe803522f73a.pdfIn PDF document text
    • https://nidegezepon.weebly.com/uploads/1/3/4/6/134650885/8181022.pdfIn PDF document text
    • https://verakolor.weebly.com/uploads/1/3/1/3/131379730/3420253.pdfIn PDF document text
    • https://xoxovumalojiru.weebly.com/uploads/1/3/0/8/130874224/gijajugizitifosuni.pdfIn PDF document text
    • https://burivoren.weebly.com/uploads/1/3/4/2/134265934/7625356.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367301/normal_6036219a6d768.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://s3.amazonaws.com/jadere/35818402569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c0c9754-7e4b-4c37-a93f-9bc7e3520ee7/multiple_intelligences_lesson_for_elementary_students.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/43516059257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d19e1d7-c9d5-42f2-8f5e-2bae74af2631/is_there_a_usa_today_paper_today.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/ncsa_women_s_swimming_recruiting_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22756e45-62ce-4656-8051-9c782ed16f72/91247427761.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/albigensian_crusade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/364f0ae7-ac78-4303-9b37-40315cc86412/jagojoma.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/92160140291.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/golefekenulunokejawizuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/capitalismo_informacional_doutrina_economica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7981c27-cc93-4631-b453-cf85a9a97350/wixatajujaluwaji.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_off0000f222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF222 5604 bytes
SHA-256: 19d65851b589df4134c39a487235c1d7e242f6c854c1e311f7392bd35f4b5478
font_01_sfnt_off00010534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10534 11208 bytes
SHA-256: 5df9a307910ad57d96716a8d0a597604345181e2e730d6c4db960614488b12a6
font_02_sfnt_off00012b9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B9F 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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