Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bb227a70d9a016f…

MALICIOUS

PDF

80.8 KB Created: 2020-11-25 06:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b95b3a922b46463d4d587cebe6edc932 SHA-1: b324b54f9afa587a001f1b0fb4bee281702722cd SHA-256: 5bb227a70d9a016f242fae37afc70c24fb0913e21e9ca6438daa6c5d54793ce8
156 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier indicated a high probability of maliciousness. The document contains numerous external links, with one prominent URL pointing to 'trafffe.ru', suggesting a phishing or malware distribution attempt. The presence of embedded URLs and the PDF structure indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://trafffe.ru/123?utm_term=learn+to+fly+1+hacked+unblocked PDF link annotation
    • https://rugazodexozapef.weebly.com/uploads/1/3/4/4/134480570/4953604.pdfIn PDF document text
    • https://xurolimusogisuw.weebly.com/uploads/1/3/4/3/134395808/d056326b0a.pdfIn PDF document text
    • https://finejorokisitoj.weebly.com/uploads/1/3/4/4/134495390/womopi-newuzur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384035/normal_5f8c688da5cab.pdfIn PDF document text
    • https://lejumapufa.weebly.com/uploads/1/3/4/6/134688193/zubopaparek-zuwitanew-xobezedodi-vokinewimal.pdfIn PDF document text
    • https://lubuminovek.weebly.com/uploads/1/3/4/5/134590555/raruvelezijexalidi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425230/normal_5f9f81db15822.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://uploads.strikinglycdn.com/files/5f4343f8-d867-4e10-a727-13198fb05830/11391456820.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/world_best_battery_saver_app.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/top_new_kpop_debuts_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/fnaf_3_unblocked_games_66.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/index_of_series_dark.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/xavatolivopop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7add06c0-acaa-4bd8-8571-e31a6e89178a/gorowo.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_off0000f490.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF490 5064 bytes
SHA-256: f738dc9e76fab6133aa42910e0d7fbd5025271dd1d3605379fbf03ba87c7948f
font_01_sfnt_off000105c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105C7 9980 bytes
SHA-256: 01e720ac4779e6d5645ae8b920bef48d15f70e5e56073b9c0c66011a0b6a2564
font_02_sfnt_off000127e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127E2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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