Malicious PDF — malware analysis report

Static analysis result for SHA-256 72e4e0e0aba3f882…

MALICIOUS

PDF

64.9 KB Created: 2020-12-25 17:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 766e7b6e581a886b5aefe1bca992d0ad SHA-1: bd6fea92973741c92dbd0968367e8e7268a08952 SHA-256: 72e4e0e0aba3f88284f020713511a3480e0f78e8f8c3149d1d581e0afe486ce7
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/123?utm_term=dfsort+tricks+manual'. This indicates the document's primary purpose is to lure the user to this external site. While no scripts were explicitly extracted, the nature of the PDF and the malicious link strongly suggest an intent to deliver a malicious payload or conduct phishing. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffine.ru/123?utm_term=dfsort+tricks+manual In PDF document text
    • https://cdn.sqhk.co/jamolipa/ibghYjg/gagurakufixijusivabeja.pdfIn PDF document text
    • https://cdn.sqhk.co/xiteduva/ggiasig/8333221201.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415519/normal_5f9a2f7bcba16.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesumor/Objf8fs/green_bubble_meme.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/metubevozisul/87384256884.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/85424045024.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/zuguregazibelikupukugix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa26de02-9ff9-4707-9395-8500956ccb22/60676399468.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/gigudolekotinitaset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6df609ea-f187-4253-a3e6-aa97d928e614/tizemuvuzepusetebenetoti.pdfIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/c225_task_2_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8178fcb3-9654-4578-944e-ea962a66ba99/65181140053.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/lizanelifasuzanitodeji.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_off0000b358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB358 4856 bytes
SHA-256: 1cc93b945918b93204b07ff592a0018465a1279834f63e41b3e04d08d6df91eb
font_01_sfnt_off0000c3ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3BA 10980 bytes
SHA-256: 3e1bb94489cec5275558e28ae03dffbfef069c645c450698d20efdbc17a1d642
font_02_sfnt_off0000e8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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