Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e425b04a9fec115…

MALICIOUS

PDF

89.9 KB Created: 2021-03-25 15:23:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: e89977f5d08a6e69b4f4f18e93a78e13 SHA-1: 5476824d8464d1076ad630ce57bd29123c9ca2e9 SHA-256: 2e425b04a9fec11595364b4fa2d23987e995f69d5c329743f2ecd46cfc9b3aec
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to direct users to potentially malicious websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/wix?keyword=cosmic+trigger+3+pdf PDF link annotation
    • http://1xbet-registr.site/jevudafivewemowosi1gm1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481667/normal_600e98429c94a.pdfIn PDF document text
    • http://vowuzemiru.medianewsonline.com/nunavuvenupi.pdfIn PDF document text
    • http://mihetos.xyz/45687835445lkwym.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485153/normal_6046a08d39625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455660/normal_603276e571bc2.pdfIn PDF document text
    • http://fakaripeti.xyz/niwekajazepewekevulolelcza.pdfIn PDF document text
    • http://ludesajezopaju.medianewsonline.com/presentation_rubric_elementary.pdfIn PDF document text
    • http://mimivudarevi.scienceontheweb.net/jodaduvakatapivimig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407986/normal_5ff3e26245a5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368952/normal_5fdfd9a2b1ecf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nununad.myartsonline.com/67511964439.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/84998802495.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/numeros_romanos_del_1_al_5000.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/xusaletukugiwiwixotutej.pdfIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/debidas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab19798a-b889-4609-8a1a-9cfd263a23af/calories_in_bojangles_chicken_strips.pdfIn PDF document text
    • https://4b98dde3-f65d-4e11-807b-d4501949e87b.filesusr.com/ugd/4a7ebd_3214e0e5703b485fb369555b323c9132.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wefadep/kavalomatagosine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eacfb7ac-ee41-4455-adf4-1b065dd07eff/seth_godin_tribes_ted_talk.pdfIn PDF document text
    • https://3c8197b3-f999-4f29-b3da-fbdfea3dbf34.filesusr.com/ugd/0047a4_0616924e2edc4de38d764a002d865d11.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/12b98a4e-8fb3-493a-829b-f5ee6d34c445/jobs_for_information_technology_management.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99d21275-0817-4c35-9e6d-4c4e08b77f34/samsung_tablet_ce0168_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/084600c7-09bb-4d69-b964-4066dfcdf839/85734766255.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11301 5104 bytes
SHA-256: 5839588b73629587561c1e39d81c2da10a5a9028f5ba7d21b1a4b093f0c12e7e
font_01_sfnt_off00012463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12463 12112 bytes
SHA-256: a4d9c8d058544d055ff4e0e6257b8408eebc259d4291e8b838857e711f167d04
font_02_sfnt_off00014c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C4F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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