Malicious PDF — malware analysis report

Static analysis result for SHA-256 6046b1414035cb8a…

MALICIOUS

PDF

36.7 KB Created: 2020-11-01 07:13:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: bb47d2a5e6e2df3e1f999bf202bde72e SHA-1: b3b9cc1a4a9ee1b30acb85910d4ed66f2e37c729 SHA-256: 6046b1414035cb8a8e9fd6a24c1eec07d295d195f3a22d6838f1472f1ba34115
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is designed to lure users into clicking on it. The embedded text and the URL itself suggest a social engineering tactic, attempting to disguise the malicious link as a search result for educational content. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/aws?keyword=prentice+hall+earth+science+lab+manual+online In PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/zukodod.pdfIn PDF document text
    • https://bufazori.weebly.com/uploads/1/3/4/3/134377245/mizilopegazak.pdfIn PDF document text
    • https://zosibikatojufo.weebly.com/uploads/1/3/4/3/134382834/98c9e2eed6.pdfIn PDF document text
    • https://wumotobu.weebly.com/uploads/1/3/4/3/134370577/6494929.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dazemi/72552015478.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/43774776891.pdfIn PDF document text
    • https://s3.amazonaws.com/digigitusuduk/22690230379.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15a62f04-314e-41cb-8ddb-5265f1d2d6cf/fodamewosojukower.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1cab9a1-0a36-45f9-815f-5a16d692edc7/uke_tabs_steven_universe.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/39684006031.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/amate_bark_painting_birds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8888/0836/files/34429946929.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/34930001130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9138139f-518f-4e01-950d-ed22ea711e98/express_sos_new_license_plate.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_off00004ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FFD 5180 bytes
SHA-256: b9963d6e159624404922dec77af18637ad14a9dede6be72361bcf90f0dbe79e0
font_01_sfnt_off0000616e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616E 10716 bytes
SHA-256: e5b433a6b7e6d6a564c090ea117457dfe6a0d71838105a4ef32731b784892c74