Malicious PDF — malware analysis report

Static analysis result for SHA-256 d59fc3e6eadc0113…

MALICIOUS

PDF

68.7 KB Created: 2020-11-11 08:46:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: dcdfe5d22234257cb6fe5fffc8434469 SHA-1: e7ff1b54b94563ff7cc99b6a68467043f9c5a41e SHA-256: d59fc3e6eadc0113afdc099b7fc12ec1835cd5536d1669ee9b695fc65096ea5f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query, likely intended to trick the user into visiting a malicious site. ClamAV detection and ML classification strongly indicate malicious intent. No scripts were extracted, but the presence of an external URI points to a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/strik?keyword=nook+app+for+kindle+fire+8 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414852/normal_5fa240cd775b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373788/normal_5f9db3975876f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408586/normal_5f93ea3120a1e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_5f8e8b8fd2960.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f889f7196434.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
    • https://s3.amazonaws.com/minaxigevani/gutuwofo.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/24_hour_fitness_yorba_linda_hours.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/50087976441.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/vemefokuwimiwizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c1aa64c-04ac-4e9e-af74-b593b2e1e18e/7507826850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e2e61e6-7d21-47ff-aef3-789b6dde48f6/p4_fusion_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/bosch_dishwasher_she43rf6uc_64_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a87a1515-a75b-466a-aa4e-8b52f90859e2/59246973386.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_off0000c43d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC43D 4792 bytes
SHA-256: d683345df1be5416661a98e5a94e1b7655e6a29fe009689cd6bed4a51c493829
font_01_sfnt_off0000d48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48F 10472 bytes
SHA-256: ee0b00b7ab24400f5b8abdd85d34bdb54d3f2d724c266a4aea3fe3003e82b41d
font_02_sfnt_off0000f82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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