Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e46dba05b85cc4f…

MALICIOUS

PDF

74.8 KB Created: 2021-03-31 00:18:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0a8cc67ae61ad3ddbdc295e3806a13f4 SHA-1: 7c11c3582400d033159d5d3d71ce5c72b59a41ba SHA-256: 6e46dba05b85cc4ff22570494bf1c33a19f88f1b856051e66789cf1a170b9237
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that directs the user to a suspicious URL, disguised as a search result. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://bologen.ru/strik?utm_term=how+can+i+learn+russian+quickly PDF link annotation
    • http://mavito.online/homeready_framework_homeownership_quiz_answers6uxyc.pdfIn PDF document text
    • http://hellochildren.online/67766206440xtsdh.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/hinieif/talking_pierre_the_parrot_app.pdfIn PDF document text
    • https://cdn.sqhk.co/tobamozusaj/jbshdif/incharge_electric_round_rock.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_6023d245bd073.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382619/normal_6052cf990fde8.pdfIn PDF document text
    • https://cdn.sqhk.co/nudotunaza/jhhojfo/16430280996.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/Kibhgje/undertale_undyne_aminos.pdfIn PDF document text
    • http://ig-verifiedsbadge.com/bojulonobaypb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451355/normal_602d232ea93c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bejideba/74515368640.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/jopiruso.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/63560682694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3884191e-1b19-44b1-bc59-9c70d694f59a/16426463563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2770d41d-e914-4ac6-a1af-3ee0db41a598/how_to_find_standard_deviation_on_ti-30x2s.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/scantron_performance_express.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/ms_office_powerpoint_timeline_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40fea785-d79d-4834-bf0f-6040a8d55240/73604930666.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/meaningful_bollywood_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/kubedukowug/3d_helicopter_video_song_free.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_off0000e6a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A2 5136 bytes
SHA-256: 5bf639970f57311e750d9fbd0e21837f788ad328e335c7361df31f2dee2a9977
font_01_sfnt_off0000f845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF845 11140 bytes
SHA-256: 2c15a70159b89381119edc0bef039f5d429f32f7640fda05e3fd3b0f10e89f7e

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