Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fcccaae0df1c356…

MALICIOUS

PDF

75.6 KB Created: 2021-01-05 20:49:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: e0d33d1100751ea379e2eaa3312f9c59 SHA-1: 256816b9beb2a9424b75f70ea37f7e43bd38a4e9 SHA-256: 2fcccaae0df1c356a334ff22893af6412539ced3b48c18e1f1862c3e7e317e7d
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URL pointing to 'traffset.ru', which is highly suspicious and likely part of a phishing or scam campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to trick users into downloading further malicious content, potentially via JavaScript execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/aws?utm_term=advanced+cambridge+english+pdf PDF link annotation
    • https://cdn.sqhk.co/bozadukopufu/JhcbWig/5e_versatile_fighting_style.pdfIn PDF document text
    • https://cdn.sqhk.co/netesatova/nhebehj/77266043384.pdfIn PDF document text
    • https://nepuvojikonutoz.weebly.com/uploads/1/3/4/6/134677469/2975759.pdfIn PDF document text
    • https://cdn.sqhk.co/rogumabutur/hefTqVx/puvakiwikib.pdfIn PDF document text
    • https://vikowawenoso.weebly.com/uploads/1/3/4/7/134744374/faravab.pdfIn PDF document text
    • https://cdn.sqhk.co/mibuxedufexi/cwYjihj/color_mazes_printable.pdfIn PDF document text
    • https://cdn.sqhk.co/loxowopiv/IhjhEhh/download_panzer_war_complete.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/jadudusujuje/tv_guide_erie_pa.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/fannie_mae_guidelines_second_home_rental_income.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/fisiopatologia_da_meningite_bacteriana.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/corao_cigano_negritude_junior.pdfIn PDF document text
    • https://s3.amazonaws.com/vezosoluvezoj/no_cable_tv_guide_louisville_ky.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/human_bones.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_off0000e8b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B1 5756 bytes
SHA-256: cc3abde72dd114cc4294a6829ebd802395dcef7200c3f5ff295cf44b8996f0dc
font_01_sfnt_off0000fc1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1C 11232 bytes
SHA-256: 62ef16757df03b32f782c600fb4d4fd6f7c9df701da613f546089ac74ac5e907

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