Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceee6ecfacc18d86…

MALICIOUS

PDF

77.8 KB Created: 2021-04-11 05:09:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 09362e45eb7cb20ee80247b9f7ee258d SHA-1: 5909aac23d06a8a0889e037c47896357f66aa8a0 SHA-256: ceee6ecfacc18d866d03de605e2f38faba34f36ae81171e6389ec709ff23538e
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for link farms and phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.Trojan'. The presence of embedded URLs and the structure suggest an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/strik?utm_term=tuesdays+with+morrie+movie PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4467573/normal_5ffb80242142b.pdfIn PDF document text
    • http://dutov.org/49582338180yrto7.pdfIn PDF document text
    • http://idealslimitalia-oficial.site/32278231445yzs9x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393635/normal_605ae48f121fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456699/normal_601461d356cd2.pdfIn PDF document text
    • http://molotkov.site/gozejifaxike81009.pdfIn PDF document text
    • http://arnautmebel.ru/jekebenenozolw3al.pdfIn PDF document text
    • http://nuverlites.online/game_of_thrones_1._sezon_7._blm_trke_dublaj_diziaykofzo.pdfIn PDF document text
    • http://neuroncraft.online/frigidaire_12000_btu_air_conditioner_bjsv875s.pdfIn PDF document text
    • http://ketousa.site/mo_gawdat_solve_for_happy_book0475y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382614/normal_5fdc2ddd4a710.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382429/normal_602354dbafcfa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://32cf4326-ba62-484c-a3ca-05d02c2dd2e5.filesusr.com/ugd/0b46e6_d2076675fb7a4dcc9ddf3852227c0db5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/banula/guideline_stroke_perdossi_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/tuvinunifixamajawi.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/nidugalovo.pdfIn PDF document text
    • https://1a9cd40a-f0d6-44d4-a143-19288280ca2b.filesusr.com/ugd/7a13df_18158e2bbf364c898dd723bca6f8ab15.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/pibutekilenax.pdfIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_09587a97c21549f39f1b57f8d4d14c24.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/fatca_reporting_means.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/what_happens_during_pulmonary_circulation.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/jijibutewuvuxowiduranubu.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/6869037091.pdfIn PDF document text
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_88c6e605b0a6480585e16786c1ac8b31.pdf?index=trueIn 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_off0000f126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF126 5236 bytes
SHA-256: c348329bb3bbba5b6206c055d18b8089d021dfb1de22c5c9bd9a6c9d93c62a5d
font_01_sfnt_off000102e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E2 11756 bytes
SHA-256: 52011028b4df542cbad9a94d01ec194f80534acc762facfba0ad973e58f84b90

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