Malicious PDF — malware analysis report

Static analysis result for SHA-256 2572561d73e666f6…

MALICIOUS

PDF

78.6 KB Created: 2021-05-22 10:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 1057a6baacb6ea18d666049ebffbf7d8 SHA-1: 9cce35df282380bd873bf007ca6b821fd9e6616f SHA-256: 2572561d73e666f6b90caf2e2245a8c766dd3d962c7609f55e963db71a7046ad
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics as an external URI and flagged by a machine learning classifier and ClamAV as malicious phishing content. The document body, though partially corrupted, suggests a lure related to printable animal mandalas for children, indicating a social engineering tactic to drive users to the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/strik?utm_term=mandalas+de+animales+para+ni%25C3%25B1os+faciles+para+imprimir+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369638/normal_603eea09bd7d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486963/normal_60306dcc76f89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476453/normal_603afdc6a5731.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455660/normal_5ffea89885176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466680/normal_600ce5f640564.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489988/normal_602b671c4e90c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461770/normal_606a2c4952d54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466175/normal_600e9a320413e.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/rujabepifar/ginavapeporiluzof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc58b4ab-37fb-4bc2-9563-9f246df75800/nupozulumikipinogefaz.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/residential_appraisal_report_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/kobivimelelo/how_to_adjust_the_carburetor_on_a_poulan_2150_chainsaw.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/ftse_all_share_index_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/algebra_2_regents_review_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/fizotufuvukufezebejovis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a8e4023-619f-4076-a5f3-433ebba03270/malala_the_powerful_video.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/can_you_get_a_duplicate_id_online.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/73533564450.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/fojagiga.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/cambridge_primary_science_6_activity_book_answers.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_off0000e805.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE805 5224 bytes
SHA-256: 70b207c45c253850a0dceddea83f7424c0d2a9fc8da0d283ff98bde29ce91529
font_01_sfnt_off0000f964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF964 10540 bytes
SHA-256: 750ab7a52016cdde9b9502fa8ee60f52540c83af7124030419b29497c1c3c964
font_02_sfnt_off00011bf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF2 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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