Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d03cc6cc7ca25fc…

MALICIOUS

PDF

138.4 KB Created: 2021-04-16 22:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: aca96c7442c719967658ae27737303bb SHA-1: ca84cb39e79fe4e6be816bbaf4f2771d8b99f279 SHA-256: 5d03cc6cc7ca25fc9f74b9a1ee7bdd5ae7c143e747b71f5de17e6db5c79a9d23
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to the URI's search query, suggesting a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ponafet.ru/strik?utm_term=how+old+is+hp+elitebook PDF link annotation
    • http://naturagrush.space/99094202326nhrxp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366995/normal_5fd877728d8b0.pdfIn PDF document text
    • http://istlan.fun/lumuxixuloxuwugoeduzd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449618/normal_601662ec6c524.pdfIn PDF document text
    • http://razvivatel.blog/654585060545ig7t.pdfIn PDF document text
    • http://moshon.space/principles_of_store_keepinglox52.pdfIn PDF document text
    • http://save50it.pro/james_allen_jewelry_store_near_me0nfth.pdfIn PDF document text
    • http://temilops.xyz/insinkerator_badger_1_leaking_from_reset_buttonp8aa2.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/abf651b9-0eee-48fa-bae0-7d9ee568a2b0/57119067688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4a4973a-eda6-4ebc-bfff-ee120d687931/social_theory_roots_and_branches_5th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/bojakitofipupome.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/46071115174.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/josezuderatabixavefira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81728cc3-abda-4272-8442-64abad972b3a/best_certification_for_testers.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/runepumo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b06e2351-1237-4d88-ae48-b95889c941d3/juvurokutabovelilenixalu.pdfIn PDF document text
    • http://fusisalumipever.epizy.com/99919922419.pdfIn PDF document text
    • http://danokob.epizy.com/lolafevipisizuw.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/trip_planning_spreadsheet.pdfIn PDF document text
    • http://kiguwodakoz.rf.gd/zokokogogisepebaviv.pdfIn PDF document text
    • http://bezopiwuzalobit.rf.gd/harbrace_college_handbook.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_off0001da3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DA3A 5000 bytes
SHA-256: 6cb729a9f5eb3d60e9ca3484529867c627a9aca920c90220f752e31693ef0196
font_01_sfnt_off0001eb40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EB40 15172 bytes
SHA-256: 4bc2bbdb1924cf36a65e41af238e18e7bb54bfd4eefa57283dd75576fb31aa8f

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