Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aad0f6b061363c3…

MALICIOUS

PDF

69.5 KB Created: 2020-12-23 07:45:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 69988a3aa5aa0015f74e4d7debb4de61 SHA-1: 75ae9ee79faa5af3fa00807b3d5277d28887ad39 SHA-256: 6aad0f6b061363c3ab786ac29486bfbba80f737c4d01c32e5fc37bd27b582601
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for malicious purposes. The document body, though heavily obfuscated, contains text related to 'science fair projects', suggesting a social engineering lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=science+fair+projects+to+copy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452607/normal_5fa850f336cad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384301/normal_5fe2a161e8d88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480591/normal_5fbd206f01002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418747/normal_5fc146d683678.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://uploads.strikinglycdn.com/files/00873222-9c0c-4a8e-ac22-fc20e38237c3/29325422234.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/nbn_hfc_setup_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc64fc43398ff7515529cec/t/5fd74ea6034a586a4f604acc/1607945895678/51221544059.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/masosudutovapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/214a4677-0b8c-4857-b973-c88e5d4acfb3/nebofuv.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/27748577665.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc787b65c272238a81aab02/t/5fd01eef5347e801a8151f42/1607474927632/racing_goggles_horse.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fc7ab77-4c1f-4584-a42d-a94d17d3ec9f/derek_prince_sermons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5494451e-169b-40fb-85d2-d502872c7c36/xofamenufesizakupem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d9d24d8-4ac4-403b-b9a4-1f3e0fdd7932/76388166196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47070e36-ce5a-4b3b-ae33-0e812d6d6fbf/compound_shapes_worksheet_answers_math-aids.com.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_off0000c76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC76D 5048 bytes
SHA-256: 4c19006170f4308e3d4584867e84c70e030a47f41cf876d761415b1efc1e3352
font_01_sfnt_off0000d89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD89D 10056 bytes
SHA-256: 23796efcb10243040bc74b003563b20bc74b62fcc8c9ab1a2182bc1dbbd2b57e
font_02_sfnt_off0000faf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF2 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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