Malicious PDF — malware analysis report

Static analysis result for SHA-256 34eb7f5d4e35450e…

MALICIOUS

PDF

84.9 KB Created: 2021-05-01 12:01:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c27c852926fc0123618ef2f0f02a4857 SHA-1: 759f89f3eaeddf5a7e75c894f972857d8de791b4 SHA-256: 34eb7f5d4e35450ebd1de4fe468c754c2dc2ea4919159af48d7561654a7fbb05
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. No scripts were extracted, but the presence of multiple suspicious URLs suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=how+to+use+zebra+gk420d+printer
    • https://fudegenajeno.weebly.com/uploads/1/3/4/5/134581691/ravitizabijer-sojabefa.pdf
    • https://cdn-cms.f-static.net/uploads/4387410/normal_6023ba60ca9f5.pdf
    • https://static.s123-cdn-static.com/uploads/4473340/normal_5feea88b42d3c.pdf
    • http://gudelew.mywebcommunity.org/tisufofigikib.pdf
    • http://finuxezanasa.mygamesonline.org/voroxifuzesajotogudi.pdf
    • https://gevotasi.weebly.com/uploads/1/3/4/3/134389209/sutabavobopinoxepiv.pdf
    • https://vuwurata.weebly.com/uploads/1/3/4/4/134481670/a05dae98a.pdf
    • http://edaruzal.xyz/descargar_juegos_psx_para_android_espaolv42rd.pdf
    • https://wumibatolazonik.weebly.com/uploads/1/3/1/4/131437616/kivazivigo.pdf
    • https://tetagusupawuwag.weebly.com/uploads/1/3/4/5/134586179/bezalus.pdf
    • https://gilemana.weebly.com/uploads/1/3/5/3/135319463/9184840.pdf
    • http://visiblawty.com/cooling_tower_basic_calculation.pdft5qc8.pdf
    • https://feveronibamuja.weebly.com/uploads/1/3/5/3/135300243/xezunimubed.pdf
    • https://cdn-cms.f-static.net/uploads/4379377/normal_605d6562c59f4.pdf
    • https://cdn-cms.f-static.net/uploads/4365584/normal_6055f80de986d.pdf
    • https://regisaralox.weebly.com/uploads/1/3/2/6/132681556/remoravevoz-liwotikise-sotevugipafop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/303323ed-2a23-4daa-85fb-b895b30159d2/diversity_in_families_10th_edition.pdf
    • https://uploads.strikinglycdn.com/files/01353632-75ab-4ca4-9f9c-7ce3c6cfa2b0/latolore.pdf
    • http://bedopevidorofi.myartsonline.com/185423363.pdf
    • https://uploads.strikinglycdn.com/files/80823d46-343e-4f69-988f-35ca36674daa/pampered_chef_brownie_pan_recipes_egg.pdf
    • https://uploads.strikinglycdn.com/files/0cbd93b9-6378-4f3c-8b1c-f5cc5409df8e/sonicwall_tz_100_default_password.pdf
    • https://uploads.strikinglycdn.com/files/1d3425ea-429c-48ef-a645-ef5a256c54a9/42542526663.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010c32.bin
2bdb2dca21c71e18e1bb24c4cd8cc58d85b82544d1530d8a71a32fecac12d208		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C32 5764 bytes
font_01_sfnt_off00011fff.bin
a3db5fcafe6680b4a05d751ce7c824917bc0026fea75ffb378e846723842f070		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FFF 11440 bytes

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