Malicious PDF — malware analysis report

Static analysis result for SHA-256 59bbabd83f56d88d…

MALICIOUS

PDF

73.1 KB Created: 2021-04-01 02:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: b74bce50b4779f2ac1ce66eb24c70e5c SHA-1: 485a74875a16194b18b4517eb21d2cb2057eb3e1 SHA-256: 59bbabd83f56d88d0b1a0c1eb4f6875da428c703d3ed2d393445f95f717737a1
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI are indicative of a social engineering attack designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jumiwimov.ru/award?keyword=huduma+number+registration+form+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478667/normal_60361315e5b81.pdfIn PDF document text
    • http://brumbum3.xyz/63177538457r2lko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450047/normal_5fe0e24fad116.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/blender_2._79_bagas31dprhh.pdfIn PDF document text
    • http://rukozhop-guide.com/scribblenauts_unlimited_100_guidemt7rt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369520/normal_602fc10e60673.pdfIn PDF document text
    • http://arenaprobet.com/176365313457lu6z.pdfIn PDF document text
    • http://rubeatyshop.xyz/361379641519bpwn.pdfIn PDF document text
    • http://luminar4-download.xyz/17667980937es4bv.pdfIn PDF document text
    • http://alkim.xyz/mumovaralaze6hiht.pdfIn PDF document text
    • http://trelon.fun/bikinoga4vsc9.pdfIn PDF document text
    • http://ilook.market/can_you_use_refrigerator_without_water_filter1vafo.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/putelekireza/askham_bryan_college_uniformed_public_services.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/12181952401.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/ignition_scada_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/42829406976.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/asterisk_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/stihl_ms170_carburetor_adjustment.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/26976871739.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/how_to_drink_bragg_organic_apple_cider_vinegar.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/25865060360.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/15339276990.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/xewifitagu.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_off0000dfec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEC 5428 bytes
SHA-256: 785b54514f765c6852c47f1c98d31dc4805ccd0646ecd5ed9fa0f0ca17073bb0
font_01_sfnt_off0000f241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF241 10732 bytes
SHA-256: bc4c243d480e518b5bbeac734c75d8409d3a648465329784b47d134a701454e6

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