Malicious PDF — malware analysis report

Static analysis result for SHA-256 abacbd678698d8f1…

MALICIOUS

PDF

83.8 KB Created: 2021-04-04 13:12:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5cc68d20cfea7cad8f5c4b5e6151f44c SHA-1: 7fd36f62e451ecfa9172ee48160674f736338dcf SHA-256: abacbd678698d8f1ccc3099ba555a18d6c52050f16379d1f7e905c18308f31f1
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URIs and a link farm structure, suggesting it's designed to redirect users to potentially harmful websites. The presence of external URIs and the ML_NYX_PDF_MALICIOUS heuristic strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://resalured.ru/strik?utm_term=can+i+start+a+baking+business+at+home PDF link annotation
    • http://xariketixagat.mypressonline.com/mawamivewapirosik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457000/normal_5ff65229e5403.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/kevewisuwigopenito.pdfIn PDF document text
    • http://paxejunon.mygamesonline.org/mumalebubajununoxazodili.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454054/normal_5fd1eae1ce47f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415930/normal_60587633596b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_600cba88195f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449616/normal_602b869ef0171.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
    • http://lazuvubiwom.epizy.com/proses_diagenesis.pdfIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_84747febbb0e4749a67ecce59066e426.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/067b8ea7-4e15-4f38-a13c-fc413b81dbb0/91149661021.pdfIn PDF document text
    • http://wejufutaz.onlinewebshop.net/calendar_2020_june.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ba6748-7ba3-424d-8b74-1094543bf76a/oster_steamer_instructions_5712.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/kipolejifuritubexigop.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/evanescence_fallen_album.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/476a1505-cb7b-4b49-b55d-3dc967da5c77/74036574220.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/amharic_alphabet_worksheet.pdfIn PDF document text
    • https://c6f55193-7475-4343-97dd-33cb3b141b6a.filesusr.com/ugd/808d8c_b51d19b8c6364541a9cf322a2cc4a006.pdf?index=trueIn PDF document text
    • http://weverikovufom.rf.gd/bebop_2_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19cddcf9-a6b9-4545-88fc-8e5311259980/pogisuwuxagamexu.pdfIn PDF document text
    • http://zivobojunoloma.epizy.com/34182363252.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c859df5c-887b-4133-a70b-92ea506b1054/craftsman_self_propelled_lawn_mower_how_to_start.pdfIn PDF document text
    • http://gavonita.epizy.com/bacillus_cereus_sintomas.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_off0000fe90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE90 5176 bytes
SHA-256: 38d171e9b8babcad515a777ffa388305ffd1c219a5faa17662fed8f57f7e940e
font_01_sfnt_off00011003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11003 10444 bytes
SHA-256: 547f91886e0b26157aa0f9520894e4f37799d756f36c7d1d949418eb52e25b46
font_02_sfnt_off000133b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133B4 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e