Malicious PDF — malware analysis report

Static analysis result for SHA-256 529bbaf59266819a…

MALICIOUS

PDF

75.0 KB Created: 2020-12-14 09:28:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 15b4a7bfa5739e842548f31d00688271 SHA-1: 2559397e8964fb828a79bcd44e16a6f6cea79588 SHA-256: 529bbaf59266819a21faf8fd6eeeb9e6f4dc6957fe05076340e90154cdfa3ce0
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://trafftec.ru/strik?utm_term=best+manual+can+openers+on+the+market PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387033/normal_5f8f703761bc0.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/2964ae31-ffd6-49f3-a179-d24acb191b94/toxefotedaril.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37f94792-c94a-493b-ac91-aef05c100670/10435011621.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/9855350961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a3844cf-aa03-4f8f-a148-c27b9b398a22/centroide_por_integracion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59d3eef0-2c46-4751-8d30-8d1ab7e82b62/brummana_high_school_summer_camp_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbaeed7b-d5b9-4284-bc72-a18da7e9fd31/50800828126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04642f7a-12b7-4620-a381-54d1497cb165/80516872072.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/729ab84b-90db-4db8-9794-5fdae28632c4/jennifer_lopez_true_love.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e755924-221f-4902-a47d-3ebb5fe4b8cf/37559598862.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/99985126561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd2de833-44ea-4ad7-9f6b-49c78792383d/didopijejugoruxiziwagev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/963ec82c-bd01-4c1d-bb02-82d5836c0877/rofobe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64cc6649-bd7d-46ab-9b10-221ed516fe8f/69577068167.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_off0000eaa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA7 5284 bytes
SHA-256: db617bb9dfd14ddb3bd3ee5f9aeae421ea6974fc2fec032310f7e4b90460c302
font_01_sfnt_off0000fc71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC71 10096 bytes
SHA-256: 5b12f782d3ebc1b111e99b5af16736e9ed9004ac6fb2695864e0b971fdb73f81

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