Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b838ea1afe1c60…

MALICIOUS

PDF

93.2 KB Created: 2021-01-25 10:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 2749c4c58a587b2dd18e7e4965b78fcb SHA-1: b8b40e560bdd3ec4f7bef009a48c811c2e22087a SHA-256: 80b838ea1afe1c60f503460f933b88b4f36fa27caee0956cce061c7ad2346bd5
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to 'traffset.ru', which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to maps, potentially to disguise the malicious intent.

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/123?utm_term=blank+map+of+india+with+neighbouring+countries PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447271/normal_5ff42b02d7971.pdfIn PDF document text
    • http://tortomsk.ru/water_drop_live_wallpaper_s10_download7ydux.pdfIn PDF document text
    • http://bachanalytics.com/24168752673aj4aa.pdfIn PDF document text
    • http://therarbooks.com/669860012140x4rc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379987/normal_5fdc7d35edff0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450734/normal_600c5414db868.pdfIn PDF document text
    • http://italystore.pro/snowdon_castle_king_arthur0u357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455396/normal_5ff07c5583452.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/pusixa/44807863925.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/xewevawizaliwalo.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/23383664517.pdfIn PDF document text
    • http://ziwebizivag.epizy.com/tisum.pdfIn PDF document text
    • http://faduzidivatakid.epizy.com/kegoxe.pdfIn PDF document text
    • http://budunasetixap.epizy.com/lizavezepov.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/brigandine_grand_edition_guide.pdfIn PDF document text
    • http://wuvuwipiwizovid.epizy.com/31949245977.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/23097828938.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_off00012e0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E0F 5916 bytes
SHA-256: 91e8a99a993c1dc2206c588ec1da8ea4ae4c197cb0cf981db843a90c14588e5d
font_01_sfnt_off00014220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14220 11072 bytes
SHA-256: 7e5d0995676407b6ff772a3a5786c4fd5589e2a263d5a2e3d5aedffc2c7810a7

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