Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19a0dbd93da4f1e…

MALICIOUS

PDF

79.6 KB Created: 2021-04-20 15:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 006f5006176bf4f13b77b1dea16e8d21 SHA-1: e0822f7610fba6207eb7c0ab2cdcd3a7bfb80eb7 SHA-256: e19a0dbd93da4f1e72e7020472eabbf3bad62e7072336b8e34e6ea62b3c6f221
96 Risk Score

Malware Insights

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

The PDF document contains a URL that mimics a search query, likely intended to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. While no scripts were directly extracted, the PDF structure and embedded URI suggest a phishing lure designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/strik?utm_term=is+there+a+metro+system+in+los+angeles PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490735/normal_604378803eb9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455195/normal_6015d86c0f635.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446400/normal_600296ba467bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367303/normal_5fca793d51a9d.pdfIn PDF document text
    • https://cdn.sqhk.co/fogobewataja/zalhfQ3/33145173757.pdfIn PDF document text
    • https://cdn.sqhk.co/pobijejok/Thfgheh/27440175156.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484126/normal_6006c65bb0cb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501484/normal_605b04a22487a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451753/normal_6041d2204e849.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487200/normal_5fe5e82d044ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464715/normal_601e6a72af12a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474475/normal_606242392ac1d.pdfIn PDF document text
    • https://cdn.sqhk.co/bisadumiza/gicJha4/pixel_car_racer_hack_app_ios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408324/normal_5fdb786d262d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381759/normal_60238f871db62.pdfIn PDF document text
    • https://cdn.sqhk.co/liminekaj/iijaFhb/fiwudofopilav.pdfIn PDF document text
    • https://cdn.sqhk.co/verexoleki/aUpgcjc/93183271656.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/efd21baf-7c79-489d-a1a9-6635c7baccdf/89608469137.pdfIn PDF document text
    • http://nabesazuxipuf.epizy.com/happy_mod_install.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98b880e3-81a4-4bda-a1f8-1482084eb04e/heil_dc90_ultra_high_efficiency_furnace_manual.pdfIn PDF document text
    • http://bosurigazo.epizy.com/zekivenipimobaradawaxeli.pdfIn PDF document text
    • http://vosikixu.rf.gd/physical_and_chemical_properties_of_amines.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_off0000f91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91C 5140 bytes
SHA-256: 057a66a624112bbd2b602a2e5bcceb8544acf0c81b392410e87b5ab80bfe580d
font_01_sfnt_off00010a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A76 11192 bytes
SHA-256: 34fe43c1be24563af5ec1d1da2eeec818efd39997104742ea4009b793233d635

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