Malicious PDF — malware analysis report

Static analysis result for SHA-256 e45673f5b55a659d…

MALICIOUS

PDF

69.0 KB Created: 2021-01-06 07:06:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: fb79667b0d7a3b960368b500504786b6 SHA-1: 9a4968bc84a2fd14b4ec1b0e529e0a71a0bc6164 SHA-256: e45673f5b55a659d6c5c4be9817d3c6600847af5263247d71b625991b71433a6
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains an embedded URL pointing to 'traffnew.ru', likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'Gender pay gap reporting'. No scripts were extracted, but the presence of external URIs and the overall detection profile strongly suggest a phishing attack.

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://traffnew.ru/aws?utm_term=gender+pay+gap+reporting+start+date PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466661/normal_5fb527b91aa5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419832/normal_5fdcf60699b80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_5fd14c6e4af71.pdfIn PDF document text
    • https://cdn.sqhk.co/favejofu/3jehihi/xidunurawinetos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489415/normal_5fbf10454c202.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459463/normal_5fcac8c625d87.pdfIn PDF document text
    • https://cdn.sqhk.co/sawapevodef/dRhegjQ/world_ice_hockey_championships_2019_final.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cf70136-425c-4000-9ec8-b12f29f0e8d2/buzefimutiriwil.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/90682760922.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/rukexunujivimilizu.pdfIn PDF document text
    • https://s3.amazonaws.com/lerezazo/hazard_identification_and_risk_assessment_template_victoria.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/el_ultimo_alquimista_en_paris_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b76803-8e1d-49b8-b119-d8ff94cc709a/terraria_metal_tiers.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/bootstrap_3_grid_template_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/aristotle_poetics_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f7a4ed7-e5ce-436a-beaa-9c79237a344a/d_d_waterdeep_dragon_heist_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/adobe_creative_cloud_2018_direct_links.pdfIn PDF document text
    • https://archive.acas.org.uk/index.aspx?1=1;/genderpayIn 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_off0000d0da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0DA 5228 bytes
SHA-256: 1cf138527bfcd7b141591cceddf15073d0621242d4280a9c94ac97e3ced21c0e
font_01_sfnt_off0000e2bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BD 10664 bytes
SHA-256: 2224c578529ab33693934345153c830c41c9f7f84b519bc720a48b1e2a9cd953

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